(单选题)5: 加入间苯三酚和浓盐酸后，细胞壁变为红色的是 （ ） A: 木栓化 B: 木质化 C: 角质化 D: 粘液化 E: 矿质化 ...

(单选题)49: I was _______ discouraged by this failure ______ try again. A: too much…to B: much… as to C: enough…to D: very much…to ...

(单选题)43: _______ what he said, he was not even there when the crime was being committe A: Concerning B: As to C: According to D: Judging by ...

(单选题)37: He spoke in a quiet, distinct voice as if his thought _______. A: went far away B: were far away C: had been far away D: was far away ...

(单选题)31: I’ll have a cup of coffee and ______. A: two pieces of bread B: two pieces of breads C: two piece of breads D: two breads ...

(单选题)19: He acted both tragic and comic parts, but he was ______ in comedy. A: at his best B: in his best C: for the best D: at best ...

(单选题)13: She put salt into her cup of tea ______. A: by mistake B: with fault C: with mistake D: by fault ...

(单选题)7: For five miles ________ the road was bordered with apple orchards. A: end up B: on end C: to an end D: in end ...

(单选题)1: If you work hard______, you won’t have to sit up all night before the exam. A: with some help B: willingly C: at other times D: by yourself ...

(单选题)95: I intended to have my daughters ______ in Englan A: educated B: educating C: to educate D: educate ...