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What always happens？一般现在时用于表示习惯性动作（IKS 74）（参见第2册第74课关键句型）
Exercises练习
A Underline all the verbs in the text that describe general truths（simple present tense）.
B Give the correct form of the verbs in parentheses. Do not refer to the passage until you finish the exercise:
Most cats ______ __(remain)suspicious of humans all their lives. One of the things that ______ (fascinate)us most about cats is the popular belief that they ______ _(have) nine lives. Apparently, there ______ (be) a good deal of truth in this idea. A cat's ability to survive falls ______ (base) on fact.
Special difficulties难点
… New York is the ideal place for such an interesting study, (I. 11) 形容词的位置
Read these sentences:
This study of cats is so interesting.
It's such an interesting study.
These studies of cats are so interesting.
They're such interesting studies.
They found it so difficult to study the behaviour of cats.
They had such difficulty studying the behaviour of cats.
Exercise练习
Supply so, such, such a, or such an:
1 The film was ______ funny, we laughed all the way through it.
2 We all had ______ fun at the seaside. It's a pity you weren't there.
3 It's ______ unusual exhibition, I'm sure you'll enjoy it.
4 The twins are ______ alike, you can't tell the difference between them.
5 There was ______ loud noise, everyone jumped.
Multiple choice questions多项选择题
Choose the correct answers to the following questions.
Comprehension理解
1 We find cats endlessly fascinating because ______ .
a．we feel there is a good deal we do not know about their lives
b．we believe that cats have nine lives
c．they are different from dogs and horses
d．they can reach a speed of 60 miles an hour while falling
2 A recent study of 132 cats in New York proved ______ .
a．that it is true that cats have nine lives
b．that cats are related to flying squirrels
c．they are different from dogs and horses
d．that cats falling from great heights are seldom killed
3 Cats can survive great falls mainly because ______ .
a．the further they fall, the less likely they are to injure themselves
b．a cat's ability to survive is based on fact
c．a falling cat relaxes its legs and so increases its air-resistance
d．they are unlikely to exceed a speed of about 60 miles an hour Structure结构
4 Cats have an unfailing fascination ______ most people. (1. 1)
a．with
b．to
c．for
d．at
5 Cats never become submissive ______ . (1. 3)
a．as dogs and horses
b．in the way that dogs and horses do
c．as far as dogs and horses
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