(单选题)48: 木质茎次生木质部中的春材特征为 （ ） A: 细胞直径大 B: 细胞壁薄 C: 质地疏松 D: 色泽淡 E: 以上均是 ...

(单选题)38: 腺毛属于 （ ） A: 分生组织 B: 输导组织 C: 保护组织和分泌组织 D: 薄壁组织 E: 机械组织 ...

(单选题)28: 木栓层的特征是 （ ） A: 生活细胞 B: 细胞壁木栓化 C: 细胞壁木质化 D: 细胞间隙发达 E: 由一层细胞组成 ...

(单选题)18: 加入苏丹试液呈红色或紫红色反应并加苛性钾长时间不溶解的特化细胞壁为 （ ） A: 木质化 B: 木栓化 C: 角质化 D: 矿质化 E: 粘液化 ...

(单选题)8: 有丝分裂中染色体排于赤道面上的是 （ ） A: 间期 B: 前期 C: 中期 D: 后期 E: 末期 ...

(单选题)48: If you have no _________ use for this book, I'll give it to someone else. A: continual B: spare C: latter D: further ...

(单选题)38: A sudden report ______ --- like the sound of a car backfiring. A: rang through B: rang out C: rang up D: rang in ...

(单选题)28: You______ me, because I didn’t say that. A: had to misunderstand B: must be misunderstood C: must misunderstand D: must have misunderstood ...

(单选题)18: He is very ______ his children and permits them few privileges. A: hard against B: hard on C: hard with D: hard to ...

(单选题)8: None of his arguments seemed to me to _______. A: hold up B: hold water C: hold on D: hold over ...

(单选题)98: With the population explosion, scientists will have to ______new methods of increasing the world’s food supply. A: stick to B: come up with C: carry out D: lead to ...

(单选题)88: Columbus discovered America but didn't ______ the new continent. A: invest B: explore C: examine D: find ...

(单选题)78: The football team is ______ to fail in the competition if it continues to train that way. A: approach B: determined C: bound D: about ...

(单选题)68: She got two pounds a month for ______ fifteen rooms. A: looking at B: looking after C: looking for D: looking around ...

(单选题)58: Most of the things he has suggested so far have ______. A: worked out B: worked of C: been at work D: worked on ...

(单选题)48: He never went again, ______ to apologize. A: or he wrote B: so did he write C: nor he wrote D: nor did he write ...

(单选题)38: A sudden report______ like the sound of a car backfiring. A: rang in B: rang out C: rang up D: rang through ...

(单选题)28: I never expect you to turn _______ at the meeting. I thought you had gone abroa A: in B: down C: up D: out ...

(单选题)18: As the clouds drifted away, an even higher peak became______ to the climbers. A: insight B: visible C: obvious D: apparent ...

(单选题)8: The elderly man ______ a small pension. A: fed on B: lived on C: lived with D: lived for ...

(单选题)98: If you can't do the job yourself, pass it ______ to somebody who can. A: through B: down C: on D: over ...

(单选题)88: What is _____ him is that it is difficult to find his son a good jo A: doubling B: dissuading C: disturbing D: distracting ...

(单选题)78: The work is not easy to do; so it'll take _____ years to accomplish it. A: a quite few B: quite a few C: few D: only a few ...

(单选题)68: Joan was the only girl who wore a formal dress at the party, and she felt ______. A: out of question B: out of sight C: out of style D: out of place ...

(单选题)58: It was thought ______. A: of impossible B: of as impossible C: as impossible D: up as impossible ...

(单选题)48: In a _____ of self-pity, he cried over his poor childhoo A: burst B: thrust C: rush D: dash ...

(单选题)38: I am sure you'd be the first to be sorry if anything was to ______ him. A: happen on B: happen to C: happened to D: happen upon ...

(单选题)28: The convict was _____ from prison after serving his sentence. A: refused B: driven C: released D: relieved ...

(单选题)18: Whenever I have to make a speech, I get butterflies in my _______. A: heart B: head C: mind D: stomach ...

(单选题)8: He asked us if we would _______ to share a room together. A: agree B: accept C: receive D: think ...

(单选题)98: When the mistake was ______ to him he hastened to correct it A: pointed out B: talked C: pointed at D: felt ...

(单选题)88: _______ is constantly complaining. A: That wife of Mr. Brown B: That wife of Mr. Brown's C: The brown's wife D: Wife of Mr. Brown's ...

(单选题)78: The suggestion met with ______ approval. A: ordinary B: common C: general D: usual ...

(单选题)68: I had stuttered since my boyhood and _______ talked very little A: as a result B: in result C: with a result D: for a result ...

(单选题)58: The room is five times ______ that one A: larger than B: like C: the same as D: as large as ...

(单选题)48: She soon ______ to do this regularly A: found it possible B: found possibility C: found it being possible D: found possible ...

(单选题)38: Your coat will lose color ______ it is washed A: after B: though C: until D: even if ...

(单选题)28: She is unconscious now, but may ______ at intervals A: come out B: come to C: come on D: come over ...

(单选题)18: He never told us why he was late for last meeting, ______? A: wasn't he B: didn't he C: did he D: had he ...

(单选题)8: The originally clean river is now seriously polluted and unfit _______. A: to swim B: for swimming C: to swim in D: for swimming in ...

(单选题)98: You must make ______ of any opportunities you have of practicing oral English. ( ) A: means B: use C: sense D: usage ...

(单选题)88: The executive art editor planned to be secretly married _____ his beloved girl. ( ) A: with B: of C: to D: at ...

(单选题)78: My feelings were _____ when she didn't ask me to her party. ( ) A: wounded B: hurt C: injured D: damaged ...

(单选题)68: Ted agreed to ________ the strike if the company would satisfy the demand of the workers. ( ) A: call out B: call off C: call to D: call on ...

(单选题)58: Your remarks are rather ______ because everyone stands by her. ( ) A: out of the place B: out of place C: in the place D: in place of ...

(单选题)48: The old woman felt very ____ when her daughter forgot her birthday. ( ) A: deceived B: disappointed C: deserted D: unfortunate ...

(单选题)38: One of his many faults is that he never ______ anything very long. ( ) A: decides on B: goes over C: sticks to D: makes sure ...

(单选题)28: _____ we would not have succeeded in our experiment. ( ) A: Without you helped us B: But for you helped us C: But you helped us D: If you had not helped us ...

(单选题)18: You ought to ______ your food properly before swallowing it. ( ) A: chew B: lick C: bite D: eat ...

(单选题)8: Bob’s doctor suggests______ for a few days. ( ) A: that he rest B: that he is resting C: his resting D: him to rest ...

(单选题)98: George was not aware ______ her presence till she spoke to him. ( ) A: in B: of C: with D: to ...

(单选题)88: He is too proud______ his own shortcomings. ( ) A: not to see B: to see C: not see D: and doesn't to see ...

(单选题)78: It is arranged that the foreign teacher ________ teach us oral English. ( ) A: ought B: should C: might D: would ...

(单选题)68: One of his many faults is that he never ______ anything very long. ( ) A: decides on B: goes over C: makes sure D: sticks to ...

(单选题)58: _____, we have to stay at home. ( ) A: Being a hot day B: Hot weather C: The day being hot D: Hot climate ...

(单选题)48: In America, when one reaches 18, he should be ______ his parents. ( ) A: independent from B: independent to C: independent on D: independent of ...

(单选题)38: Identify the errors in the following sentence:He was singing an Anti-Japanese song, as if remembered those unforgettable days. ( ) A: was singing B: Anti-Japanese C: remembered D: unforgettable ...

(单选题)28: ______that the left side of the human brain is responsible for logic. ( ) A: It generously is believed B: It is believed generously C: It is generously believed D: Generously it is believed ...

(单选题)18: Identify the errors in the following sentence:You may sell the used books to the new students at the university at a cheaper price than youpaid for them. ( ) A: used books B: a cheaper C: than D: paid for ...

(单选题)8: The police are （looking into） the mysterious disappearance of a two-year-old girl from home in Florida. ( ) A: finding out B: handling C: studying D: investigating ...

(单选题)98: ______ the end of the meeting ______ he had made a serious mistake. ( ) A: Until ... did the chairman find B: Until ... the chairman found C: Not until ... did the chairman find D: Not until ... the chairman found ...

(单选题)88: Identify the errors in the following sentence:She is most eagerly to know where the treasure has been hidden. ( ) A: mos B: eagerly C: the treasure D: has been hidden ...

(单选题)78: I hired a boat ______ I could go fishing. ( ) A: and B: to C: so that D: in order ...

(单选题)68: I’m ______ for news about them. ( ) A: nervous B: anxious C: eager D: terrible ...

(单选题)58: Identify the errors in the following sentence:Alice is the only one of those neighbors who are always willing to help the old. ( ) A: the only B: who C: are D: the old ...

(单选题)48: He mistook me ______ my sister from my receding figure in darkness. () A: for B: of C: by D: into ...

(单选题)38: Identify the errors in the following sentence:The polished floor was covered with rugs and the walls were hanged with paintings. ( ) A: polished B: was covered C: were hanged D: with ...

(单选题)28: He has difficulty keeping up ______ the rest of the class. ( ) A: for B: with C: as D: in ...

(单选题)18: Identify the errors in the following sentence:He went to the library and spent the whole afternoon there to look for material for an article on Shakespeare. ( ) A: and B: to look for C: material D: on ...

(单选题)8: One ______ what one owes. ( ) A: ought to be paid B: ought to pay C: ought to not pay D: ought not pay ...

(单选题)98: Identify the errors in the following sentence:Jonnie was not barely able to walk without help because of the bad injury in his leg. ( ) A: was not B: without help C: because of D: bad ...

(单选题)88: The doctor recommends ______ as much as possible. ( ) A: him to rest B: that he rests C: that he rest D: him resting ...

(单选题)78: Chichester （endures） all kinds of hardships in solo sailing round the world. ( ) A: suffered B: experienced C: overcame D: lasted ...

(单选题)68: chongu A: got to B: had already started C: ought to get D: earlier ...

(单选题)58: He was awarded a ______ for the protection of environment. ( ) A: praise B: price C: word D: medal ...

(单选题)48: She could not hide her ______. ( ) A: amusement B: moment C: disappoint D: disappointment ...

(单选题)38: Identify the errors in the following sentence:Of the two lectures, the first was by far the best one, partly because the person who delivered it had such a pleasant voice. ( ) A: the first B: the best C: it D: such a ...

(单选题)28: The atomic weight of helium is ______ that of hydrogen. () A: heavier four times than B: four time heavier than C: than four times heavier D: four times heavier than ...

(单选题)18: Identify the errors in the following sentence:Jim spent his vacation going to Mexico, flying to Hawaii and he visited Canada. ( ) A: spent B: his vacation C: flying to Hawaii D: he visited Canada ...

(单选题)8: The teacher asked them to ______ the selected material after class. ( ) A: go over B: take out C: skim on D: examine with ...