【单选题】听力原文:M: The volcanic ash from the eruption of Mount Saint Helens certainly caused a lot of damage, didn't it? W: It did, but not as much as experts have predicted. It seems to have had a beneficial ef...
A.
The crops were obliterated for the entire year.
B.
The crops nutritional value was considerably lessened.
C.
The soil was permanently damaged.
D.
The loss was not as bad as had been anticipated.
【单选题】听力原文: The volcanic ash from the eruption of Mount Saint Helens certainly caused a lot of damages, didn't it? It did, but not as much as experts had predicted. It seems to have a beneficial effect as w...
A.
The conversion of volcanic waste to fertilizer.
B.
The menace of currently dormant volcanoes around Mount Saint Helens.
C.
The eruption of Mount Saint Helens and its effects on the environment.
D.
The elimination of volcanic ash by natural means.
【判断题】从技术角度来看,信息系统安全一般包括计算机安全、网络安全和信息安全 3 个方面。
【单选题】The eruption had the __________ of buildings _________ under the ash and lava.
【多选题】从技术角度看,计算机系统安全包括()()和()。