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【单选题】
钻石被誉为“宝石之”，是因为它的（ ）是自然界所有事物中最高的。A.
硬度
B.
色散
C.
热导率
D.
折射率
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举一反三
【单选题】I’m sorry I'll have to ___ your present.
A.
turn off
B.
turn out
C.
turn over
D.
turn down
【单选题】Since I was a stranger there, I had no one to______.
A.
turn up
B.
turn on
C.
turn to
D.
turn down
【单选题】When I am in difficulty, I always ____ him for help. [ ]
A.
turn out
B.
turn over
C.
turn to
D.
turn on
【简答题】词汇运用 1. -Do you like __________(tomato)? -Yes, very much. 2. -Can he __________(turn) off the light? -Yes, he can. 3. It's half past seven now. Sandy __________(write) a letter to her friend. 4. -How ...
【单选题】在决定运输手段时,一般要考虑的因素不包括_。
A.
运费、运输时间、频率、运输能力
B.
货物的安全性、准确性、适用性
C.
伸缩性、网络性、信息
D.
货主和驾驶员偏好
【单选题】I want to watch the news on TV. _____, please. [ ]
A.
Turn on it
B.
Turn it on
C.
Turn off it
D.
Turn it off
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