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【单选类】

Dogs sometimes can warn their owners________.

A、

to train their sense of smell

B、

to perform search and rescue

C、

which are caused by diseases

D、

who suffer from certain cancers

E、

which molecules go with cancer

F、

by recognizing certain blood samples

【单选类】

Paragraph⑤:

A、

Electronic nose design

B、

Blood sample detection

C、

Molecule structure

D、

Training for dogs

E、

Life-saving ability of dogs

F、

Dogs' ability to detect diseases

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【单选类】

The aborigines mainly eat plant food.

A、

True

B、

False

C、

Not Given

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【单选类】

The town council fired the old man because they thought________.

A、

his job was not useful

B、

his salary was too high

C、

he did not do his job well

D、

he was too old for the job

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【单选类】

第28题答案是


A、

She wanted it to be the last time.

B、

She couldn't stay up late on weeknights.

C、

Gabi planned to go travelling next summer.

D、

This meant she had to go to summer school.

E、

Gabi has to master the material in six weeks.

F、

They could have the whole summer free from schoolwork.

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【单选类】

The aborigines have supper leftovers for breakfast.

A、

True

B、

False

C、

Not Given

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