下列药物属于既能清热凉血，又能活血祛瘀的是（） A.牡丹皮 B.地骨皮 C.生地黄

很多人都喜欢吃苹果，在植物体的结构层次中，苹果属于[ ]

A．细胞    

B．组织    

C．器官    

D．系统

All the Lortons’ farm animals – the cows and the goats, the ducks and the chickens, got along well with Roger—a llama(美洲驼). But since llamas are used to thinking of animals like coyotes(土狼) and dogs as threats, it took Roger a few weeks to accept the family dog.

Roger protects the sheep and lambs in two ways. First, he keeps the sheep together. A hungry coyote will try to scatter(分散) the flock and then pick off a weak or small animal that has become separated from the rest. But when a coyote threatens the Lorton’s sheep, they all run to Roger, depending on him to defend them.

And he does, with his second defense: confronting(对抗) the coyote. Llamas are very curious and will run at top speed to investigate anything that looks interesting. When a coyote sees a three-hundred-pound llama rushing toward it, the coyote will not usually wait around to see what the llama wants.

And once a llama realizes that a coyote is threatening the flock, the llama will stand between the coyote and the sheep to defend them. Often, the llama will charge toward the coyote with its head down. As it runs, it will sometimes call out an alarm to the flock in a high-pitched voice. Since Roger’s arrival, coyotes haven’t gotten any sheep from the Lortons.

小题1:The purpose of the passage is to tell us that ________________.

1. a llama helps guard sheep
2. coyotes are sheep’s main enemy
3. llamas are much smarter than coyotes
4. some types of dogs can’t protect sheep

小题2:The following words can be used to describe Roger Except_____________.

A．protective

B．curious

C．brave

D．patient小题3:It can be inferred that the Lortons are __________________.

1. scientists studying llamas’ behavior
2. farmers using a llama to guard sheep
3. citizens keeping a llama as a pet
4. businessmen selling llamas to farmers

临床治疗钩端螺旋体病首选（）

A.红霉素

B.氯霉素

C.四环素

D.大剂量青霉素G

E.链霉素

合资企业注册资本的增加、转让或以其他方式处置，合法的程序是：( )

A．应由股东大会通过，并报审批机构批准

B．应由董事会会议通过，并向原登记管理机关办理变更登记手续

C．应由董事会会议通过，并报审批机构批准，再办理变更登记

D．由董事会会议通过后，直接报审批机构批推即可

简述密性试验的目的以及方法。