9. The scientist ______ his speech to make it easier for children to understand the threat of global warming.
(A) estimated (B) documented (C) abolished (D) modified
8. One can generally judge the quality of eggs with the naked eye. ______, good eggs must be clean, free of cracks, and smooth-shelled.
(A) Agriculturally (B) Externally (C) Influentially (D) Occasionally
7. This math class is very ______; I have to spend at least two hours every day doing the assignments.
(A) confidential (B) logical (C) demanding (D) resistant
6. We decided to buy some ______ for our new apartment, including a refrigerator, a vacuum cleaner, and a dishwasher.
(A) utensils (B) facilities (C) appliances (D) extensions
5. When there is a heavy rain, you have to drive very ______ so as to avoid traffic accidents.
(A) cautiously (B) recklessly (C) smoothly (D) passively
4. No one knows how the fire broke out. The police have started an ______ into the cause of it.
(A) appreciation (B) extension (C) operation (D) investigation
3. The mirror slipped out of the little girl¨s hand, and the broken pieces ______ all over the floor.
(A) scattered (B) circulated (C) featured (D) released
2. Spending most of his childhood in Spain, John, a native speaker of English, is also ______ in Spanish.
(A) promising (B) grateful (C) fluent (D) definite
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1. You¨ll need the store ______ to show proof of purchase if you want to return any items you bought.
(A) credit (B) guide (C) license (D) receipt
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