A、 expense
B、 exposure
C、 expansion
D、 expectation
答案:A
A、 expense
B、 exposure
C、 expansion
D、 expectation
答案:A
A. to compete
B. competing
C. to be competed
D. having competed
A. separation
B. discrimination
C. deviation
D. distinction
A. the Apollo mission was very successful
B. protection from space radiation is no easy job
C. astronauts will have deformed children or grandchildren
D. radiation is not a threat to well-protected space explorers
A. maintain a regular pattern of life
B. prevent trouble that comes looking for him
C. avoid danger and inefficient labor
D. restore his bodily functions
A. conceiver
B. receiver
C. perceiver
D. deceiver
A. modern
B. moderate
C. excess
D. excessive
A. mean
B. assume
C. hope
D. suppose
A. make them wish for more
B. spoil their appetite
C. sharpen their sensation
D. stimulate their consuming power
A. warmly welcomed the abundance of wealth shown by publishers
B. warmly welcomed the enormous amount of creativity shown by publishers
C. showed great enthusiasm in publishers of treat wealth
D. reacted strongly to the unlimited creativity of publishers
A. The Atmosphere and Our Environment
B. Research on Radiation
C. Effects of Space Radiation
D. Importance of Protection against Radiation