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【判断题】
柴油机排放的污染物主要有一氧化碳、碳氢化合物、氮氧化合物和微粒、烟度。（ ）A.
正确
B.
错误
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Questions 3 to 4 ar e based on the conversation you have just heard. 3.
A.
He works at a national park .
B.
He is a queen been specialist .
C.
He removed the beyond from the boot .
D.
He drove the bees away from his car.
【单选题】Questions 3 to 4 ar e based on the conversation you have just heard.
A.
He works at a national park .
B.
He is a queen been specialist .
C.
He removed the beyond from the boot .
D.
He drove the bees away from his car.
【简答题】Questions 3 to 4 ar e based on the news report you have just heard.
【单选题】Questions 3 to 4 ar e based on the conversation you have just heard.
A.
They were looking after the queen
B.
They were making a lot of noise
C.
They were looking for a new box to live in
D.
They were dancing in a unique way
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