下列哪一项是区分不同税种的主要标准( ) A．纳税主体 B．征税对象 C．税率

根据短文内容选择正确的答案。

      It was Saturday. Mary wanted to go to the park with her friend. But she got up late. She put on her

clothes quickly and didn't have breakfast. She rode her bike very quickly. At the crossing the red light was

on. But she didn't stop. A policeman stopped her. " Please get off your bike. Don't you see the red light? " 

" Yes, I do. But I didn't see you." said Mary.

1. On ____________, Mary went to the park.

A. Saturday

B. Sunday

C. Monday

2. She went to the park ____________.

A. on foot

B. by bus

C. by bike

3. At the crossing the ____________ light was on.

A. yellow

B. red

C. green

4. Mary ____________ the red light.

A. saw

B. didn't see

C. was looking

5. Why didn't she stop when she saw the red light?

A. She didn't see the red light.

B. The red light was broken.

C. She didn't see the policeman.

比较推理是化学学习中常用的思维方法，下列有关物质的比较推理中正确的是[ ]

A．烧碱属于碱，故纯碱也属于碱

B．生铁比纯铁硬，故黄铜比纯铜硬

C．氢氧化铝可治疗胃酸过多，故氢氧化钠也可治疗胃酸过多

D．厨房洗涤剂对油污有乳化作用，故汽油对油污也有乳化作用

下列交易或事项产生的现金流量中，属于投资活动产生的现金流量的有( )。

A．因火灾造成固定资产损失而收到保险赔款

B．为购建固定资产支付已资本化的利息费用

C．为购建固定资产支付的耕地占用税

D．用银行存款偿还长期借款

E．最后一次支付分期付款购入固定资产的价款

仰角钻孔装封孔器时，操作人员（）正对封孔器

A、不得

B、必须

C、可以

D、视情况

中央型肺癌是指生长在 __________ 的肺癌。