What is the most suitable title for this passage？
A. Freecycle Means Free Stuff and a Cleaner Environment.
B. A Very Useful Website.
C. A Good Way to Give and Get.
D. Freecycle Intends to Avoid Cabbage.
查看答案
A．boilingB．toilingC．choppingD．cutting
A. boiling
B. toiling
C. chopping
D. cutting
有一条指令用十六进制表示为CD21，用二进制表示为()。
A. 1.10111e+015
B. 1.10011e+015
C. 1.10011e+015
D. 1.10111e+015
Small particles mainly damage ______.
A. lungs
B. eyes
C. bloodstream
D. heart
A: Look at this pink watch. It looks great, doesn't it？ And it's only $ B: ______
A. It's only twenty dollars. Oh, my goodness.
B. I don't want to look at it. After all, it's a watch.
C. The price is good. But I want to buy a more expensive watch.
D. How is it possible that a watch only costs us $ 20？
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