垃圾填埋场地应位于居民区（）m以外或更远，最好位于居民区的下风向，使运输或作业期间废物飘尘及臭气不影响当地居民，同时应考虑到作业期间的噪声应符合居民区的噪声标准。
A. 500
B. 400
C. 300
D. 200
查看答案
【B10】
A. or
B. as well
C. both
D. also
【B3】
A. over
B. by
C. on
D. through
【B17】
A. details
B. reply
C. all
D. fact
It can be inferred from the passage that George Washington and John Adams both ______.
A. lived for a long time in Washington, D.C.
B. were rather formal gentlemen .
C. traveled to many foreign countries
D. encouraged Jefferson to run for the presidency
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