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【单选题】
( )造雪机一般沿着雪道边地下保温供水系统放置,并均匀地分布在滑雪场里,当气候达到造雪条件时,设备会自动造雪。A.
塔式造雪机
B.
卧式造雪机
C.
移动式造雪机
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【单选题】If the land area of the earth is about 55,000,000 square miles, the area that can be explored in space is probably______.
A.
55,000,000 square miles
B.
70,000,000 square miles
C.
13,720,000 square miles
D.
550,000,000 square miles
【单选题】The earth is about __ as the moon.
A.
as fifty time big
B.
fifty times as big
C.
as big fifty time
D.
fifty as times big
【单选题】The earth is about ( ) as the moon.
A.
as fifty time big
B.
as big fifty times
C.
fifty as times big
D.
fifty times as big
【单选题】The earth is about ___as the moon.
A.
as fifty time big
B.
fifty times as big
C.
as big fifty times
D.
fifty as times big
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