Unit 7 The Sea Period One Warm-up and Lesson 1 课时精练
（北师大版必修3，广东专用）
时间：45分钟
Ⅰ.完形填空(共15小题；每小题2分，满分30分)
阅读下面短文，掌握其大意，然后从1～15各题中所给的A、B、C和D四个选 项中，选出最佳选项。
Before discussing this topic，the replacement of dead people through cloning，a big misunderstanding has to be pointed out.Cloning can only produce__1__identical humans but it can't__2__that the personal beliefs or goals will be similar to the__3__，too.This means for example that even if somebody would have a baby whose embryo(胚胎)was enhanced with__4__for musical talent it isn't guaranteed that this baby will someday become a famous__5__.The child may have musical talent but what he makes out of these__6__，whether he uses them or not，is up to__7__.If it is not interested in taking piano lessons，for example，the talent will stay__8__.The problem is the same when somebody would try to replace a loved one.__9__expectations on how the character will be might lead to frustration.Of course the outward appearance of the clone will be exactly the same but the personality will be__10__different and that's the critical point here.The clone can never really be a__11__for another person.Also we have to ask us if it is justifiable from the ethical side.Cloning people to__12__others is somewhat similar to have another baby just to create a perfect donor for the already existing sibling that is__13__.How would you__14__if your parents someday tell you that you were only born for your brother or sister and that you wouldn't be here now if your__15__wouldn't have needed your help or wouldn't have died?
【解题导语】 本文主要阐述人们对于克隆人的误解，以及道德思考。 1．A.theoretically C．practically
B．genetically D．similarly
解析 “基因上”，根据常识，克隆是无细胞繁殖，克隆产物跟克隆母体的基因
是完全一样的。 答案 B 2．A.ensure
B．enable
C．promise
D．admit
解析 “确保，保证”，虽然可以克隆出基因相同的人，但却不能保证克隆人 信仰也会跟母体原型类似。 答案 A 3． A.pattern
B．example
C．model
D．copy
解析 “原型”。pattern模板、模型，example例子，copy拷贝；复制。 答案 C
B．elements
C．possibilities
D．cells
4． A.genes
答案 A
5． A.teacher
B．footballer C．dentist D．pianist
解析 从上文中的musical talent可知有可能成为pianist。 答案 D
C．talents
D．skills
6． A.embryoes B．expectations
解析 “Children may have musical talent”，但他们如何利用这些talents。 答案 C
B．the child D．the scientists
7． A.the genes
C．the parents
解析 取决于孩子自己，由后文的it也可得知指孩子。 答案 B
B．undisvovered D．unpopular
8． A.unknown
C．unacceptalbe
解析 unknown未知的；undiscovered存在但未被发现；unacceptable不能接受的；unpopular不受欢迎的。
答案 B
B．Unanswered D．Unrealistic
9． A.Unreal
C．Unavailable
解析 表示不切实际的希望会让人受挫。 答案 D
C．objectively
D．seriously
10．A.probably B．exactly
解析 由上文可知克隆产物跟克隆母体的外表是完全一模一样的，但他们的个性却有可能不一样。
答案 A
C．substitute
D．choice
11．A.candidate B．part
解析 candidate候选人；part部分；零件，substitute替代品；choice选择。 答案 C
B．rescue
C．help
D．satisfy
12．A.replace
解析 克隆产物不可能是替代品，所以不能用来代替他人。 答案 A
B．unfriendly
C．unhappy
D．sick
13．A.healthy
解析 为生病的兄弟姐妹找一个完美的捐赠者。 答案 D
B．think
C．sense
D．feel
14．A.say
解析 你会作何感想？say，think跟what搭配，sense不合题意。 答案 D
B．sibling
C．pet
D．family
15．A.parent
解析 由上文的brother or sister可知不是parent，pet，family，而是sibling兄弟姐妹。
答案 B
Ⅱ.阅读理解(共5小题；每小题2分，满分10分)
Let us take a look at the exact harvest of the sea.The first thing that comes into the mind is the fish.Fishing in the sea is a major industry of the world and maritime countries and their people depend on fish for food.There are major fishing grounds of the world，notably the North Sea and the Sea of Japan.
Besides fish，the whale is hunted for its flesh and blubber as well as its bones.Whale hunting is a dangerous job because the whale is not a fish in the real sense and it can destroy a boat if it strikes.A whole novel Moby Dick has been dedicated to whale hunting.
The floor of the sea has not been exploited.There is a belief that the deep floors of the sea must be rich in minerals.When the minerals on the land is exhausted，perhaps man may turn to the sea bed for resources.There is，of course，mineral oil found in some places in the sea bed.Already some countries have taken up the idea and have started prospecting for oil in the sea.
If the harvest of the sea is understood in a wider sense，water transport then can also be the bloodstream of the world's commerce.Wide arteries(干道)of shipping lines have liners loaded with the world's goods.Till the invention of the airplane the ship was the only link connecting countries divided by the seas.
Another important item of harvest is the energy that could be produced by using the tidal waves.There are countries where these tidal waves may bring harm.But they could be used to produce power.This possibility has not been ruled out and there are attempts ready to get this source.
16．What can we learn from the passage about the North Sea? A．It is the most famous in the world. B．It is nearly as large as the Sea of Japan. C．It attracts many visitors every year. D．Its major industry is fishing in the sea.
解析 细节理解题。根据第一段最后一句可知，在北海和日本海有世界主要的渔场，因此在北海，捕鱼是主要的产业。 答案 D
17．If you want to learn about whale hunting, you can________. A．go to the sea by boat
