单选题：Why do researchers develop a new device to monitor signs of

题目分类：理工类
题目类型：单选题
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题目内容：

Why do researchers develop a new device to monitor signs of landslides? A．because the new device can measure the site directly
B．because the new device can be sunk into boreholes or fixed above ground
C．because the common methods can cause false alarms
D．because the common methods are useless

参考答案：

答案解析：

He presented a new approach．

He presented a new approach． A．triumph B．movement C．response D．method

分类：理工类题型：单选题

In hostage situations the US police forces repeatedly play p

In hostage situations the US police forces repeatedly play pop songs at high vol

分类：理工类题型：单选题

Which of the following statements is true，according to the r

Which of the following statements is true，according to the research findings rep

分类：理工类题型：单选题

It is said the houses Nong this street will soon be demdishe

It is said the houses Nong this street will soon be demdished(A级)． A．pulled down

分类：理工类题型：单选题

his fruit isn’t ripe(A级)yet-we can’t eat it．

his fruit isn’t ripe(A级)yet-we can’t eat it．A．heathy B．mature C．rich D．delicious

分类：理工类题型：单选题