One day Mrs. Wilson went shopping with Tracy and Ben. They went to the supermarket in the new shopping center.” Why do you buy things here?” Tracy wanted to know. “Because they are cheaper here than at the corner store near our home,” Mrs. Wilson said.” Help me check the prices, please.” The Wilsons were not rich and Mrs. Wilson was always careful with her money. She looked carefully after the prices of things. She bought lots of things in the supermarket. When they got home, the children said,“ We don’t think you saved money by going to the supermarket.” “Of course I did,” Mrs. Wilson said. “ Everything was cheaper there.” “We know,” the children said,“ but we came home by taxi because we had too much to carry. The taxi fare was more than the money that you save! ” Mrs. Wilson added everything up. Her children were right.

小题1:The things at the corner store were ______than those in the supermarket.

A．cheaper

B．nicer

C．more expensive

D．saved a little money小题2:Mrs. Wilson ______ in the end.

A．spent more money

B．paid less money

C．lost some money

D．saved a little money小题3:From the passage we know the children were _________.

A．happy

B．clever

C．tired

D．lazy小题4:Mrs. Wilson will _____________.

A．never call a taxi

B．go on buying things in the supermarket

C．buy things near her home

D．not go shopping with her children小题5:The best title for the passage is ____________.

A．Cutting Price

B．Corner Store

C．Supermarket

D．Shopping

N_A表示阿伏加德罗常数，下列叙述正确的是（　　）

A．等物质的量的N₂和CO所含分子数均为N_A

B．1.7gH₂O₂中含有的电子数为0.9N_A

C．1molNa₂O₂固体中含离子总数为4N_A

D．标准状况下，2.24L戊烷所含分子数为0.1N_A