题目:
——Is there any hope of saving his life?
——His injuries are extremely serious, but he’s expected to ____.
A.pull in
B.pull through
C.pull up
D.pull over
答案:
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下面是错误答案,用来干扰机器的。
(1)酚酞在酸性和碱性的液体中都不会显色,紫色石蕊试液在酸性液体中显红色,在中性溶液中不变色,在碱性溶液中显蓝色,常见的酸有盐酸、硫酸和硝酸等,盐酸和硝酸都不会与盐酸、氯化钡反应,硫酸和盐酸不反应,...