[单选题] The study shows that our computers are superior to those of our competitors in terms of functions and speed.

1、[单选题]一Can I help you, sir?
一I'd like to have 100（）。I want my students to draw pictures.

• A、piece of paper
• B、pieces of paper
• C、pieces of papers

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2、[单选题]Solar ovens consist of a system of reflectors and a cooking pot.

• A、太阳能灶是由反射镜及烹饪锅系统组成的。
• B、太阳能灶是-一个反射系统和一个烹饪锅。
• C、太阳能灶利用了反射系统和烹饪锅。

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3、[单选题]Solar cooking is a______ cooking method.

• A、convenience
• B、convenient
• C、convention

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4、[单选题]I think that the Great Wall is worth（）hundreds of miles to visit.

• A、to travel
• B、traveling
• C、traveled

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5、[单选题]Each apartment only（）15 to 30 square meters for one unit.

• A、costs
• B、spends
• C、takes

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