要排除最常见部位的转移，首选哪一项检查A．长骨平片 B．骨髓穿刺 C．肝脏B超 D．

When do you become an adult, a grown-up? At eighteen? Twenty-one? Thirty? Adulthood may seem a long way to you, but the fact is that you are in the process of becoming an adult right now. The changes are so gradual逐步的）( that you may not notice them ,but you can be sure that they’re happening.

When you were a child, a parent or an older relative probably bought your clothes and helped you clean up your room. Now you are likely to have a clothes allowance, to care for your bedroom, and to share other cleaning chores. You may once have had trouble getting your homework finished on time. By now, you may have learned to pace yourself. You know how much time you need. Do you remember begging your parents to stop for ice cream, or take an after-school job when you want money for a new clock radio? Of course, you don’t always budget your time and your money perfectly. Your room doesn’t always pass inspection. And you are often less than even tempered when something upsetting happens. But you’re learning.

As you get older, you have more privileges(特权) and more responsibilities. You may baby-sit for younger brothers and sisters, help cook dinner, and do odd jobs to contribute to the family income. You may get to stay up to watch a late movie on television, sit in on adult conversations, take subways and buses alone, or go on camping trips with your friends. Eventually, you will have a job and an apartment of your own.

You’ll become a voter and perhaps a husband or wife, maybe even a parent. But doing things adults do does not necessarily mean you will be wiser, braver, or more self-assured. It takes time to acquire knowledge and build self-confidence. Adults need to test themselves in the world, just as you do as a teenager. Being an adult is a continual process of growth.

小题1:The best title for this passage may be _____________.

A．Becoming An Adult

B．It Is No Good Becoming An Adult

C．Becoming A Voter

D．Adulthood Is always A Long Way To You小题2:According to the passage, the writer may probably think that ________.

A．nobody can be called an adult

B．becoming an adult is a long process of becoming learned and self-assured

C．adults are not self-confident

D．only adults can budget time and money perfectly小题3: Which of the following is NOT true according to the passage?

A．You don’t know you’re growing up because changes are gradual.

B．You used to beg for toys when you were young.

C．Even if you are quite grown up , you still need to acquire knowledge.

D．People will never be wise, brave or self-assured.

下列物质的用途是利用其化学性质的是[ ]

A．用大理石作房屋的装修材料

B．用炸药爆破拆除危旧建筑

C．用玻璃刀裁切玻璃

D．用石墨作干电池的电极

一条直线5厘米长．______．（判断对错）

过度磨耗不可能出现（）

A．面磨平

B．边缘变锐

C．牙本质暴露

D．面下1/3变短

E．牙体颊舌径变窄

就秘书素质而言，中外对领导人专职秘书与机关群体秘书素质要求相同的是( )

A．领导人专职秘书低于机关群体秘书

B．领导人专职秘书高于机关群体秘书

C．两者相当

D．各有侧重