单项选择题

Questions 18 to 20 are based on the following passage. At the end of the passage, you will he given 15 seconds to answer the questions.
Now, listen to the passage.
We feel an object is heavy

A．because weight is a fixed quality in an object.
B．because they are far away from the centre of the earth.
C．because of the earth’s strong attraction for them.
D．because they are not taken away from the surface of the earth.

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单项选择题

Which of the following statements is CORRECT

A．Neither the Greek soldiers nor their enemy could understand the messages.
B．African soldiers shouted from tower to tower to pass messages.
C．Using flags to send messages was found by a French engineer.
D．Only by using telephone could people send speech sounds quickly.

单项选择题

Who has the sovereignty over the Harwar Islands

A．Qatar.
B．Bahrain.
C．Japan.
D．Iran.

Questions 18 to 20 are based on the following passage. At the end of the passage, you will he given 15 seconds to answer the questions. Now, listen to the passage. We feel an object is heavy 您的浏览器不支持 audio 元素。

Questions 18 to 20 are based on the following passage. At the end of the passage, you will he given 15 seconds to answer the questions.
Now, listen to the passage.
We feel an object is heavy