寒冷天气停放飞机时（） A.发动机或APU必须开车以供热给水系统 B.水箱加热器和导

与吗啡叙述不符的是（）

A.结构中含有醇羟基

B.结构中有苯环

C.结构中羰基

D.为μ阿片受体激动剂

E.结构中有5个手性碳原子

如图所示的四种现象中，由于光的折射形成的是（　　）

A．

手影

B．

倒影

C．

水面“折枝”

D．

镜中花

What kind of pets do people have in your country? Dogs? Cats? How about a duck, hippo(河马) or lion? Here are two cases of animal owners with unusual pets.

Barrie Hayman has a pet duck called Star. Barrie adopted(领养) him after his brothers and sisters stayed away from him at birth. Barrie, a duck breeder, realized the little duck needed special attention. So he began taking Star with him everywhere he went. “I would put him in my pocket while I did my shopping,” said Barrie. Now, at five months, Star is too big for Barrie’s pocket, but the two are still inseparable. They watch sports, together and even share a drink together. Barrie said, “He is a fantastic duck. I’ve never known any like him.” Star even has his own Facebook page, with more than 2,000 Face book friends.

Then there is the case of Tonie and Shirley Joubert in South Africa. They live with their hippo, Jessica. Tonie saved Jessica from floodwaters when she was only a day old. Jessica lives outside their riverside house, but she knows how to open the kitchen door, and often goes there for a snack. Tonie recently said, “I don’t know whether Jessica sees me as a hippo or whether she sees herself as a human.” Shirley is more certain, “Jessica sees herself as our child and I see Jessica as my daughter. I can’t imagine my life without Jessica.” Jessica is free to leave, and often visits wild hippos that live nearby. But she always returns home at night. Jessica’s website notes that she has three hippo boyfriends, but one in particular,Fred, is her favorite. They often go grazing(吃青草) together and Fred has recently moved onto the Joubert’s house as well.

小题1:What’s the main idea of the passage?

A．Some websites are set up to protect pets.

B．Some unusual pets are adopted by people

C．People should take good care of their pets

D．Pets sometimes can be very interesting小题2:What does the underlined word “inseparable” in Paragraph 2 mean?

A．Always together

B．Always separated

C．Always friendly

D．Always healthy小题3:Barrie took Star everywhere he went because______.

A．he had never seen a duck like Star

B．he set up a Facebook page for Star

C．he wanted care more about Star

D．he needed Star to drink with him小题4:We can learn from the passage that Jessica ______

A．came to Joubert’s home when she was 5 months old

B．loves eating in the Joubert’s kitchen

C．doesn’t see herself as a human being

D．has more than three boyfriends

钢筋若冷拉至控制应力而未达到控制冷拉率，则该钢筋应（）。

A.属合格品

B.属不合格品

C.降级

D.以废品论