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【简答题】
八年级一在国庆期间到某大山游玩，小黄在半山腰发现了一个山洞，几个同学都围在洞口，出于安全考虑，他们不能随便进去，但很想知道山洞大概有多深，这时，小黄盯住手表（电子表）朝洞内大喊一声，正好4s后听到比较清楚的回声，请你计算这个山洞有多深？（设声音在空气中的传播速度为340m/s）．
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【单选题】Before the 20th century the horse provided day to day transportation in the United States. Trains were used only for long-distance transportation. Today the car is the most popular【C1】______ of transp...
A.
kinds
B.
mean
C.
means
D.
types
【单选题】— What was the _________________________ the day before yesterday? —It was April 6th.
A.
temperature
B.
day
C.
time
D.
date
【单选题】Before the 20th century the horse provided day-to-day transportation in the United States. Trains were used only for long-distance transportation. Today the car is the most popular【C1】______of transpo...
A.
kinds
B.
sort
C.
means
D.
types
【简答题】A.Helen is similar to her mother. B.Helen will be a good police. C.He likes Helens mother. D.He knows Helen very well.
【单选题】Before the 20th century the horse provided day to day transportation in the United States. Trains were used only for long-distance transportation. Today the car is the most popular【C1】______of transpo...
A.
kinds
B.
means
C.
mean
D.
types
【简答题】Helen will have that dress altered to fit her．
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