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【简答题】
如果三角形的一个外角等于和它相邻的内角的4倍，等于与它不相邻的一个内角的2倍，则此三角形各内角的度数是（ ）。
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【简答题】An important question about eating out is who pays for the meal. If a friend of yours asks you to have lunch with him. You may say something like this, “I’m afraid it’ll have to be some place cheap, a...
【单选题】— If you want to protect your eyes from harm, which should NOT you do? — _____ . [ ]
A.
Wear sunglasses to protect your eyes from ultraviolet rays (紫外线)
B.
Stay before the computer screen and play s for long
C.
Do eye exercises every day
【单选题】What should be avoided if you want to protect youself from er in solo travel?
A.
Presuming the worst and be overly fearful.
B.
Watching out for those who are too friendly with you.
C.
Being careful not to ener yourself by throwing caution to the wind.
D.
Taking the road with less money if you hear stories about criminals on the road.
【单选题】The writers of this text want to give the impression that the PROTECT ALARMS system is ______ .
A.
elementary
B.
experimental
C.
everlasting
D.
economical
【简答题】复杂的立体交叉一般由主干道、次干道和（）组成。
【简答题】建筑内部给水系统根据其用途不同可分为: 、 和
【简答题】An important question about eating out is who pays for the meal. If a friend of yours asks you to have lunch with him, you may say something like this, “I’m afraid it will have to be some place cheap,...
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