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题型：单选题题类：真题难易度：普通

Some children prefer to eat junk food ________ it's not good for their health.

A、although B、if C、as D、when

举一反三

Jack spends much money on books ________ he is not so rich.

In a position like this, one can ________ stand up _______ lie down . So it is very uncomfortable.

The robots can do some heavy work , ____ they still can't do many other things.

Tina likes bread, ______ she doesn't like salad.

—The plane won't take off ______ the thick clouds move away.

—Let's wait patiently for the announcement from the airport.

Modern science has found that one is using chopsticks, over 30 joints and over 50 muscles(肌肉)are used.

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