题目内容

[音频]

A. It crashed shortly after landing.
B. The wheels couldn’t come down.
C. All the engines stopped working.
D. It shook violently during landing.

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[音频]

A. They were very scared.
B. They all tried to stay calm.
C. They prayed for their safety.
D. They comforted each other.

[音频]

A. She went to see her mother immediately.
B. She rang up her mother saying everything was OK.
C. She sent her mother a short message of her safe arrival.
D. She decided that she would never travel by air.

影响油脂色泽的因素包括()。

A. 类胡萝卜素
B. 叶绿素
C. 脱镁叶绿素
D. 氧化型色素

罗维朋比色槽规格有()。

A. 25.4mm
B. 133.4mm
C. 124.4mm
D. 23.4mm

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