问题
选择题
—I often have hamburgers for lunch.
—It's bad for you ________ too much junk food. [ ]
A. eat
B. to eat
C. eating
D. ate
答案
答案：B
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—I often have hamburgers for lunch.
—It's bad for you ________ too much junk food. [ ]
A. eat
B. to eat
C. eating
D. ate
答案：B
时，应取少量该溶液，依次加入BaCl2溶液和稀盐酸