单项选择题
Questions 14-17 are based on the following monologue. You now have 20 seconds to read Questions 14-17.
Who identified the mould as penicillin
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A.One of Fleming’s colleagues.
B.Sir Almroth Wright.
C.Howard Florey.
D.Fleming.
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单项选择题
A.to slideB.slideC.slidD.sliding
A.to slide
B.slide
C.slid
D.sliding
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单项选择题
If we see some plants close their leaf pores, we can deduce that they are living in ______.
A.rainy area
B.hot area
C.drought area
D.windy area
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