下列各项中不属于大气污染源面源统计参数的是( )。A．主要污染物的排放量 B．烟气

阅读理解。

     Last Saturday, my classmates and I went to the Hada Hill for a picnic (野餐) On that day, the weather was fine and the sky was clear and blue, so all of us were excited and happy. We left home and went

there by bike with fruit, eggs, meat, vegetables, cookers (炊具) and some other things.      

     About one hour later, we arrived at the foot of he hill. There were many nice flowers and green trees.

Birds were singing sweet songs, How happy we were ! Then we were busy with the picnic.  Some of us

got water,  some cut the meat and vegetables and some cooked, others sat on the grass to wait for a nice

lunch. At one o'clock in the afternoon, our lunch was ready.

     After lunch, at three o'clock, we began to climb the hill. We all tried to climb to the top of the hill.

What a happy time we had! I will never forget it.

根据短文内容，选择正确答案。

l. What did they go to the Hada Hill for?

A. Having a picnic.    

B. Seeing nice flowers.

C. Eating some fruit.    

D. Seeing green trees.

2. What was the weather like that day?

A. Rainy.        

B. Windy.

C. Fine.          

D. Cloudy.

3. How were they feeling that day?

A. Excited and happy.

B. Bored and tired.

C. Disappointed and tired.

D. Busy and bored.

4.  About an hour after leaving home, they _             

A. went back from the hill

B. got to the top of the hill

C. got to the foot of the hill

D. began to sing and dance

5. When was the lunch ready?

A. At l:00 p.m.        

B. At 3:00 p.m.

C. At 5:00 p.m.        

D. At 4:00 p.m.

公元762年，为避唐代宗李豫之讳，改（）县为宿迁县，沿用至今。

下列变化中不属于化学变化的是（  ）。

A．油脂的硬化

B．S₈受热后变为S₂

C．水泥制作水泥混凝土

D．―→＋He

“马歇尔计划远不是一项经济援助计划”，这是因为这项计划实际上是

A．美苏两大军事政治集团对峙的产物

B．导致当代政治格局不稳定和动荡的产物

C．以经济的手段为美国控制西欧铺平了道路

D．美国蓄意分裂德国和扶植西德

竞争具有哪些作用？