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【单选题】Television broadcasts are (1) to an area that is within the (2) of the sending station or its relay (中转站). (3) television relays are often placed on hills and mountains so that they can (4) a wider r...
A.
books
B.
conference
C.
newspapers
D.
press
【单选题】Passage 18 We all know that it is possible for ordinary people to make their homes on the equator (赤道), although often they may feel uncomfortably hot there. Millions do it. But as for t...
A.
in warm air
B.
in cold air
C.
when it reaches the polar region
D.
only when the clouds are down low
【单选题】Mars Global Surveyor is the oldest of five NASA robotic devices, which is designed to find out signs that Mars once had water;and it had been taking detailed pictures of the red planet for a decade. U...
A.
its life
B.
its orbit
C.
its power
D.
its position
【单选题】Kenya Wildlife Safari from ￡995DAY 1 LONDON/NAIROBIDaylight flight to Nairobi．On arrival, check in at the Holiday Inn Mayfair Court.DAY 2-4 SAMBURU AND TREETOPSSet off on safari, driving north, to the...
A.
traveling long distance
B.
spending nights outdoors
C.
watching animals in the wild
D.
seeing different kinds of plants
相关题目：
【单选题】过测者天底和两天极的半个大圆称为（）。
A.
测者真地平圈
B.
天体时圈
C.
测者子圈
D.
测者午圈
【单选题】黄道与天赤道的两交点是（）。
A.
春分点和秋分点
B.
夏至点和冬至点
C.
南点和北点
D.
东点和西点
【单选题】赤道穿过的大洲中，面积最大的是[ ]
A.
亚洲
B.
非洲
C.
大洋洲
D.
南美洲
【单选题】通过两天极和任一天体位置的半个大圆称为（）。
A.
天体时圈
B.
天体垂直圈
C.
天体赤纬圈
D.
测者子午圈
【单选题】磁赤道是指下列何者（）。
A.
磁差为零
B.
磁倾角为零
C.
地磁水平分力为零
D.
与地理赤道相重合
【判断题】天赤道与地平圈的交点是东点和西点。
A.
正确
B.
错误
【单选题】平极绕黄极的运动为（），真天极对于平天极的周期摆动为（）
A.
平动、摄动
B.
摄动、平动
C.
岁差、章动
D.
章动、岁差
【单选题】赤道是[ ]
A.
地球最长的纬线
B.
地球最长的经线
C.
地球的旋转轴
D.
东西半球的分界线
【单选题】Passage 18 We all know that it is possible for ordinary people to make their homes on the equator (赤道), although often they may feel uncomfortably hot there. Millions do it. But as for t...
A.
in warm air
B.
in cold air
C.
when it reaches the polar region
D.
only when the clouds are down low
【单选题】Mars Global Surveyor is the oldest of five NASA robotic devices, which is designed to find out signs that Mars once had water;and it had been taking detailed pictures of the red planet for a decade. U...
A.
its life
B.
its orbit
C.
its power
D.
its position
【单选题】黄道与天赤道的交点为（ ）
A.
春分点,秋分点
B.
南点,北点
C.
上点,下点
D.
夏至点,冬至点
【单选题】以两天极为起止点且通过格林天底的半个大圆称（）。
A.
测者子圈
B.
测者午圈
C.
格林子圈
D.
格林午圈
【单选题】Kenya Wildlife Safari from ￡995DAY 1 LONDON/NAIROBIDaylight flight to Nairobi．On arrival, check in at the Holiday Inn Mayfair Court.DAY 2-4 SAMBURU AND TREETOPSSet off on safari, driving north, to the...
A.
traveling long distance
B.
spending nights outdoors
C.
watching animals in the wild
D.
seeing different kinds of plants
【单选题】赤道没有穿过的大洋是（ ）
A.
太平洋
B.
大西洋
C.
北冰洋
D.
印度洋
【单选题】在真地平圈以上的天极称:
A.
天北极
B.
天南极
C.
俯极
D.
仰极