I级生物安全柜100%气流外排,II级生物安全柜30%气流外排,70%气流进入内循环。
A. 对
B. 错
Modern technology has a big influence on our daily life. New devices are widely used today. For example, we have to __(1)___the Internet every day. It is becoming more and more __(2)____ to our nearly everybody. Now it is time to think about how the Internet influences us. What ___(3)___it has on our social behavior.The internet has totally _____(4) our life, there is no doubt about that I think that the Internet has changed our life in a ____(5)way.
After driving for 30 miles,she suddenly _______that she is driving in the wrong direction.
A. realized
B. has been realizing
C. realizes
D. is realizing
Last week he said that the sun always ________ (rise) from the east.
A. rises
B. will rise
C. will have risen
D. would have risen