【单选题】
4. The instructor watched the student ____ the test.
【单选题】
4. Our room must ___ clean.
【简答题】
Direction: Fill in the blanks with thephrases given below. Change the form if necessary.[set off; after all; attach to; burst into laughter; lean against; teach...a lesson; take off; come to sense; give in to]4. There is no need to pick at him all day long. Hes a child[填空1].
【单选题】
4. I think the story is not so ____as that one.
【多选题】
4. 关于气雾剂的正确表述是
③
气雾剂系指药物封装于具有特制阀门系统中制成的半固体制剂
④
按相组成分类,可分为一相气雾剂、二相气雾剂和三相气雾剂