During the experiment, the subjects were asked
A. to control the sensors and the camera.
B. to rate the degrees to which they could binterrupted.
C. to compare their bhaviors with others'.
D. to analyze all the indicators of interruption.
查看答案
A．necessaryB．possibleC．difficultD．good
A. necessary
B. possible
C. difficult
D. good
Lake Nyos and Lake Monoun explode B．ecause
A. the gases rise to the top and mix with air.
B. people from the villages turn over the water.
C. scientists have put in a computer system.
D. they have more gases trapped at the bottom than other crater lakes.
A．questionB．exampleC．designD．device
A. question
B. example
C. design
D. device
Power supply systern Was nOt damaged duringthe storm.
A. Right
B. Wrong
C. N0t mentioned
微信支付 
支付宝支付