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1、首先，一位医学教授介绍了什么是急救，什么时候进行急救以及在紧急情况下如何进行急救。
First of all, a medical professor introduced ， when to give first aid and how to offer first aid in an emergency.
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2、我非常高兴和你分享上周五在我们学校举行的一个讲座。
I am more than delighted to . The lecture was held at my school last Friday.
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3、 累了就容易睡过头，这是很自然的。(it作形式主语)
if you are too tired.
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4、 锻炼可以防止身体走样。(shape)
Taking exercise can .
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5、 学生们帮助他站起来，然后他继续上完了他的课。(foot)
Students and then he continued to finish the class.
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6、 她是那种总是能让他人感觉轻松自在的人。(ease)
She is the kind of person who can always .
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7、 急需为这些无家可归的人提供食物和住处。(need)
food and shelter for these homeless people.
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8、 The bay was bathed in sunshine，and there was a group of kayakers around 150m off the shore. ____A、洗澡 B、游泳 C、沐浴
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9、 Money was always tight ， but we had a roof over our heads. ____A、拮据的 B、严密的 C、绷紧的
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10、 collapse
A.v . 因病等 昏倒 B.v . 崩溃；瓦解 C.n . 崩溃
(1)、One afternoon, while attempting to get into bed she collapsed from what was eventually discovered to be a heart attack.(2)、Hundreds of scientists, writers and academics sounded a warning to humanity in an open letter published last December: Policymakers and the rest of us must engage openly with the risk of global collapse.(3)、The fur trade kept nutria(海狸鼠) in check for decades, but when the market for nutria collapsed in the late 1980s, the cat-sized animals multiplied like crazy. -
11、 slip
A. vi. 溜走 B. vi. 下降，落下 C. n. 小错误
D. vi. 滑倒
(1)、The share price of the company slipped due to the poor financial report.(2)、So, don't stop speaking when you make a mistake unless it's a truly serious one. You don't need to apologize for a minor slip.(3)、During these waits, the brain slips away from the body and wanders about until the water runs over the edge of the counter and onto your socks.(4)、If she should slip, she would fall between the sleepers, into the rapidly flowing stream. -
12、 swallow
A. vt. 掩饰；抑制 B. vt. & vi. 吞下；咽下 C. vt. 吞没；淹没；侵吞 D. vt. 相信；信以为真
(1)、After the operation you may find it difficult to chew and swallow.(2)、I watched her walk down the road until she was swallowed by the darkness.(3)、I found her excuse very hard to swallow.(4)、You're going to have to swallow your pride and ask for your job back. -
13、 Guests (panic) and screamed when the bomb exploded.
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14、 The (operate) had to work extra carefully in the (fog) weather to ensure the safety of the equipment.
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15、 It was on a (freeze) cold morning that the man dived into the lake and rescued a drowning child.
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16、 I ran to my father with my red and (swell) eyes, threw my arms around him and hugged him (tight).
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17、 (interrupt) are one of the worst things to deal with while you're trying to get work done.
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18、 He spent the evening (wrap) up the New Year presents.
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19、 What you should do is learning from your mistakes instead of (drown) in sorrows and regrets.
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20、 He reached out a hand， (grab) her by the arm and dragged her back.