What should a dinner guest do if he is to be late for dinner？
A. He should cancel-the visit.
B. He should find a good excuse.
C. He should say nothing about it.
D. He should phone to explain why he will be late.
查看答案
The writer holds that the potential to make healthy body tissues will______
A. aggravate moral issues of human cloning.
B. bring great benefits to human beings.
C. help scientists decode body instructions.
D. involve employing surgical instruments.
The President is certain to know the result of this vote as a (n) ______ for further conomic decision-making.
A. mandate
B. aviation
C. pretext
D. rampage
According to Hudson Institute researchers, the effect of the early retirement of qualified
A. constructive.
B. significant
C. inconclusive.
D. detrimental.
The second paragraph is written chiefly to show that______
A. there will be an acute labor shortage in the near future.
B. baby-boomers contribute much to the US economic output
C. government policies concerning older people are out-dated.
D. alder workers are enthusiastic about collecting social benefits.
微信支付 
支付宝支付