填空题

A—Welcome aboard Delta Airlines.
B—On behalf of Delta Airlines Captain Johnson and his crew welcome you aboard.
C—Our flight to Japan will take approximately four hours.
D—Let us remind you to fasten your seat belts, straighten your seats, and kindly refrain from smoking during take-off.
E—Under your seat there is a life vest like this one for each of you.
F—An oxygen mask will come down from overhead in case of an emergency.
G—Please press the call button whenever you need any help.
H—We’ ll take off soon. Please fasten your seat belt.
( )在此提醒您系好安全带，椅背竖直，还有起飞这段时间请勿吸烟。

【参考答案】

A/F

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填空题

The reason of development of international trade is that certain countries are able to produce some goods ______ other countries.

单项选择题

Which of the following statements is TRUE().

A. The total growth rate of world population will increase.
B. The growth rate of population in richer countries’ will increase.
C. The growth rate of population in poorer countries will increase.
D. The total growth rate in American countries will increase.