更多"Scientists had thought the 'explosi"的相关试题:
[单项选择]Scientists had thought the "explosion" was caused by ______.
A. a meteor
B. a small comet
C. an spaceship from another planet
D. some big fire
[单项选择]The possibility that the explosion was caused by sabotage cannot be ______.
A. broken out
B. cancelled out
C. ruled out
D. wiped out
[单项选择]The population explosion is caused chiefly by ______
A. a fall in death rates
B. a rise in birth rates
C. competition between rich and poor countries
D. an increase in the amount of food per person
[单项选择]Scientists once thought that men are different from animals because ________.
[单项选择]With the population explosion, scientists will have to （ ） new methods of increasing the world's food supply.
A. come up with
B. carry out
C. lead to
D. stick to
[单项选择]With the explosion of population, scientists will have to______ new methods of increasing the world's food supply.
A. do away with
B. put up with
C. come up with
D. go along with
