2021年考研真题2021年考研英语真题和答案

2021年考研真题2021年考研英语真题和答

案

2021年考研英语真题和答案

Section I Use of English Directions: Read the following text.Choose

the best word(s) for each numbered blank and mark A, B, C or D on ANSWER SHEET

1.(10

points)Research on animal intelligence always makes me wonder just how smart humans are.

1the fruit-fly experiments described in Carl Zimmer’s piece in the Science Times on Tuesday.Fruit

flies who were taught to be smarter than the average fruit fly

2 to live shorter lives.This

suggests that 3 bulbs burn longer, that there is an 4 in not being too terrifically bright.Intelligence,

it 5 out, is a high-priced option.It

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takes more upkeep, burns more fuel and is slow 6 the starting line because it depends on learning — a gradual 7 — instead of instinct.Plenty

of other species are able to learn, and one of the things they’ve apparently learned is when to 8 .Is

there an adaptive value to 9 intelligence? That’s the question behind this new research.I

like it.Instead

of casting a wistful glance

10 at all the species we’ve left in the dust I.Q.-wise, it implicitly asks what the real

11 of our own intelligence might be.This is

12 the mind of every animal I’ve ever met.Research on animal intelligence also makes me wonder what experiments animals would

13 on humans if they had the chance.Every cat with an owner,

14 , is running a small-scale study in operant conditioning.we

believe that

15 animals ran the labs, they would test us to

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16 the limits of our patience, our faithfulness, our memory for terrain.They

would try to decide what intelligence in humans is really

17 , not merely how much of it there is.18 , they would hope to study a

19 question: Are humans actually aware of the world they live in?

20 the results are inconclusive.1.

[A] Suppose [B] Consider [C] Observe [D] Imagine 2.[A]

tended [B] feared [C] happened [D] threatened 3.[A] thinner [B] stabler [C] lighter [D] dimmer 4.[A] tendency [B] advantage [C] inclination [D] priority 5.[A]

insists on [B] sums up [C] turns out [D] puts forward 6.[A]

off [B] behind [C] over [D] along 7.[A]

incredible [B] spontaneous [C]inevitable [D] gradual 8.[A]

fight [B] doubt [C] stop [D] think 9.[A]

invisible [B] limited [C] indefinite [D] different

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