21.Which of the following impressed the man most? A: A harbor. B: A stadium. C: A nightclub. D: A performance.

21、Which of the following doesn't belong to nonalcoholic beverage? A: tea B: juice C: liquor D: coffee

Question 21 Which of the following sentences has the tones 313? A: Dui bu qi B: Qing shao deng

Which one is the output of the following code? ( )[img=325x160]17da657328ecbda.png[/img] A: 0 B: 21 C: none of these is correct D: 36

【多选题】21题 A. 21题A B. 21题B C. 21题C D. 21题D

Which of the following statements is NOT true about the London share market A: a. It had fallen 21 points yesterday. B: b. There will be good news for the market. C: c. It badly needs good news to improve the current situation. D: d. There are some rumors which will not help the market.

40枚种蛋的孵化天数如下，问这个孵化天数与21d有和差异？（计算t值） 20 19 21 22 21 20 18 20 21 19 23 18 22 20 21 19 20 21 21 20 19 24 20 19 21 21 20 19 21 23 20 20 18 21 20 21 19 23 20 21

Questions 18～21 are based on the following dialogue between a teacher and a student. Which subject is taken as a general background course A: English sociology. B: Journalism. C: Freshman French. D: Writing.

Which are the preferred frequencies in radiotelephony for on scene cornrnunications? A: 121.5MHz and 2045kHz B: Ch 70 (156.525MHz) and 21 74.5kHz C: Ch 11 (156.650MHz) and 202lkHz D: Ch 16 (156.800MHz) and 2182kHz

Which one can hurt the lung when acupuncture is too deep: A: Jianyu(LI 15) B: Jianliao(TE 14) C: Tianzong(SI 11) D: Jianjing(GB 21)