单选题
1：Chinese customs regulations _____ taking precious works of art out of China. 1.prohibit 2.allow 3.avoid 4.repel 2：As we know, blood types A and B cannot receive AB, but AB may receive A or B. Type O can give to any other group; hence it is often called the _____ donor. 1.general 2.popular 3.universal 4.common 3：When he was a student, his father gave him a monthly _____ towards his expense. 1.salary 2.allowance 3.wage 4.money 4：The calm sea gave no _____ of the storm that was coming. 1.symbol 2.hint
3.implication 4.inference 5：The book has been well reviewed, but ____ actual sales it hasn’t been very successful. 1.in need of 2.in terms of 3.in contrast to 4.in place of 6：I had to stand in a _____ for hours to get tickets for the film. 1.row 2.procession 3.tail 4.queue 7：The ship’s generator broke down, and the pumps had be to operated _____ instead of mechanically. 1.manually 2.artificially 3.automatically 4.synthetically 8：The black clouds _____ rain. 1.indicated
2.hinted 3.suggested 4.meant 9：The next moment, __________ she had time to realize what was happening, she was hit over the head. 1.when 2.after 3.before 4.as 10：They have had three _____ days of heavy rain. 1.continual 2.running 3.gradual 4.successive 11：I don’t _____of smoking in the waiting-room. 1.approve 2.agree 3.approach 4.sanction 12：Our guide gave us a detailed _______ of this painting but we still do not understand.
1.authority 2.interpretation 3.instruction 4.institution 13：This story is not real, it is only _____. 1.imaginary 2.imaginative 3.imaginable 4.imagined 14：A nuclear plant was built in the area _______ the farmers’ protests. 1.with 2.in 3.over 4.among 15：I hope John would give me some _____ of what he would like for his birthday. 1.clue 2.hint 3.implication 4.inference 16：The improvement in his mental health is being _________.
1.remained 2.attained 3.obtained 4.maintained 17：The use of standard components makes _____ easier when they are worn. 1.replacement 2.place 3.repair 4.modification 18：The case against Robert Jones was _____ for lack of evidence. 1.discarded 2.dismissed 3.eliminated 4.resigned 19：Your total scores _______ to 89.5. 1.sum up 2.summing up 3.summed up 4.sums up 20：The organizing committee will hold a _____ meeting on Wednesday to discuss