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【单选题】
关于B移动站天线，下列说法正确的是（）。A.
B移动站天线为方向性天线，因此通信时，天线必须对准卫星
B.
B移动站天线为全向性天线，因此通信时，天线不必对准卫星
C.
B移动站天线为鞭状天线，因此，通信时，天线周围不能有障碍物。
D.
以上都不对
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【单选题】Weather forest ______ at every morning.
A.
is being given
B.
is given
C.
was given
D.
was gived
【单选题】Weather forest ______ at every morning.
A.
is being given
B.
is given
C.
gives
D.
was gived
【单选题】What does the underlined word mean? It was a stroke of luck that I found you here.
A.
stroke (of sth): a single successful action or event
B.
stroke: a sudden serious illness when a blood vessel in the brain bursts or is blocked, which can cause death or the loss of the ability to move or to speak clearly
C.
stroke: a mark made by moving a pen, brush, etc. once across a surface
D.
stroke: a style of swimming
【单选题】What does the underlined word mean? I looked after my father after he had a stroke .
A.
stroke (of sth): a single successful action or event
B.
stroke: a sudden serious illness when a blood vessel in the brain bursts or is blocked, which can cause death or the loss of the ability to move or to speak clearly
C.
stroke: a mark made by moving a pen, brush, etc. once across a surface
D.
stroke: a style of swimming
【单选题】地面沉降的主要危害不包括下列哪一项。（ ）
A.
沿海地区沉降使地面低于海面，受海水侵袭;
B.
桥墩下沉，桥梁净空减小，影响水上交通
C.
在一些地面沉降强烈的地区，伴随地面垂直沉陷而发生的较大水平位移，往往会对许多地面和地下构筑物造成巨大危害
D.
地面沉降不会造成危害
【单选题】Extreme weather and (reckless) development are plotting against the rain forest.
A.
各自地
B.
鲁莽的
C.
有关的
【简答题】Dry weather intensified huge forest fires in the far______.
相关题目：
【单选题】Weather forest ______ at every morning.
A.
is being given
B.
is given
C.
was given
D.
was gived