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【判断题】
钼蓝比色法测定土壤磷含量时,比色液的颜色是黄色(空白除外)。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】He had three of his teeth knocked out in the fight．
【单选题】He bought three books, is in Chinese, in English, and in Japanese.
A.
the first; the other; the third
B.
one; the other; a third
C.
one; the other; another
D.
one; another; the third
【简答题】Task 4 第10页长对话
【单选题】He about three thousand words in the past three years. [ ]
A.
has learned
B.
learned
C.
was learning
D.
had learned
【单选题】We wanted to know _____. [ ]
A.
where did he live three years ago
B.
where he lived in three years before
C.
why he cried so sadly
D.
how soon he will come back
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