(单选题)1: Most living creatures now on the earth are the product of 2,000,000,000 years of ___. A: evolution B: development C: revolution D: repetition ...

(单选题)15: This river forms a natural _______ between China and Korea. A: boundary B: string C: spot D: zone ...

(单选题)9: He finished the job at the ___ of his health. A: expanse B: spend C: expense D: expenses ...

(单选题)3: Everybody ___ in the hall where they were welcomed by the secretary. A: assembled B: accumulated C: piled D: joined ...

(单选题)17: Jimmy was so nervous not a single word ___ down in the dictation. A: he wrote B: he was written C: did he write D: was he written ...

(单选题)11: In general, my reaction is that we should _______ carefully A: proceed B: pace C: pale D: pan ...

(单选题)5: Visitors should ___the receptionist of their arrival. A: inform B: notice C: announce D: tell ...

(单选题)11: There are many examples of societies ___ people have done so much to be more beautiful. A: which B: where C: at which D: that ...

(单选题)24: When I really like some music, I don’t just ___ it. A: tire B: tired C: get tiring of D: get tired of ...

(单选题)18: When you see your untidy handwriting, you also wish that you had started revision ___ earlier. A: a lot B: many C: lots of D: very ...