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听力原文: (14)We've become alarmed over the health center by the number of students who are experiencing hearing loss. First, I want to go over some basics about hearing. Then we can take a look at our school environment and see if we can figure out some ways to protect hearing. (16) The leading cause of preventable hearing loss is excessive noise. Too much moderate noise for a long time or some types of intense noise for even a short time can damage hearing. Loudness is measured by decibels. One decibel is the lowest sound the average person can hear. Sounds up to 80 decibels generally aren't harmful. That's noise like traffic on a busy street. But anything louder than 80 decibels may hurt your hearing. (15) Once you are up to 140 decibels, that's like a jet plane taking off, then you might even feel pain in your ears. Those are sure sign that your hearing's at risk. Even one exposure to a really loud noise at close range can cause hearing loss. So what you need to do is limit your exposure to harmful levels. If you pass along this handout, we can take a look at the decibel level of some common campus sounds. Notice how loud those horns are that people take to football games. They are really dangerous if blown right behind you. What is this passage talking about?
A.
Air pollution.
B.
Noise damage.
C.
Environment on campus.
D.
Solutions for pollution.
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参考答案:
举一反三
【单选题】“木石前盟”在《红楼梦》中指的是()
A.
贾宝玉与薛宝钗
B.
贾宝玉与妙玉
C.
贾宝玉与林黛玉
D.
贾宝玉与史湘云
【判断题】《红楼梦》中的“木石前盟”是指贾宝玉与林黛玉之间的爱情。
A.
正确
B.
错误
【单选题】Decide whether each statement is a fact or an opinion.
A.
fact
B.
opinion
【单选题】血涂片中红细胞形态呈靶形,下列最有可能的是
A.
遗传性球形红细胞增多症
B.
巨幼细胞性贫血
C.
珠蛋白生成障碍性贫血
D.
脾切除术后
E.
溶血性贫血
【判断题】转向轴可以设置成上下两端,用在汽车发生碰撞时,保护驾驶员的安全。
A.
正确
B.
错误
【单选题】晚清时期,以下哪一位是日本第一位内阁总理大臣()
A.
高杉晋作
B.
西乡隆盛
C.
坂本龙马
D.
伊藤博文
【单选题】按《红楼梦》中前面的描述,通灵宝玉对于贾宝玉而言是块与其生命有莫大关联,并帮助他除邪的宝贝。可到了第29回,宝玉因受到林黛玉所说的“好姻缘"的刺激,把玉给摔了。可见在内心里,宝玉是抵触“金玉良缘"的,他更在乎的是"木石前盟“。这一回中。林黛玉心里所想的“金玉”相对,“金”指的是
A.
金麒麟
B.
金锁
C.
金项圈
D.
金坠子
【单选题】Decide whether each of the following statement is acceptable as request in a business letter. Will you tell me how much profit your company has made and let me decide whether your advertisement of the...
A.
Acceptable
B.
Unacceptable
【单选题】血涂片中红细胞形态呈靶形,下列最有可能的是
A.
遗传性球形红细胞增多症
B.
巨幼细胞性贫
C.
珠蛋白生成障碍性贫血
D.
脾切除术后
E.
溶血性贫血
【单选题】下列说法正确的一项是( )
A.
《登幽州台歌》是“初唐四杰”之一陈子昂的代表作。
B.
陶渊明是山水诗歌的开创者,谢灵运是田园诗的开创者,而孟浩然和王维的诗歌则实现了对山水与田园题材的综合运用。
C.
《金瓶梅》是在民间传说基础上创作的以家庭生活为题材的长篇章回小说。
D.
《红楼梦》中的“木石前盟”是指林黛玉与贾宝玉的爱情。
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