单选题A farmer imported several fine long wool Tomney sheep from Australia to breed with his Debouittet sheep in hopes of increasing the value of the flock’s wool. This is an example of ______.A pure-breedingB crossbreedingC reproducingD cloning

题目
单选题
A farmer imported several fine long wool Tomney sheep from Australia to breed with his Debouittet sheep in hopes of increasing the value of the flock’s wool. This is an example of ______.
A

pure-breeding

B

crossbreeding

C

reproducing

D

cloning

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相似问题和答案

第1题:

She had a great deal of trouble ________ the sheep to a place of safety in the snowstorm.

A. driving

B. drive

C. to drive

D. to driving


参考答案:A

第2题:

In the phrases a herd of cattle, a flock of sheep, both cattle and sheep contain two morphemes.()


参考答案:正确

第3题:

His oral English is _____ than his brother's.

A. well

B. good

C. better

D. fine


正确答案:C

第4题:

Because sheep () meat and wool, they are valued in many countries.

A. produces both

B. both produce

C. produce both

D. both produces

知识点: Newassignment1


参考答案: C

第5题:

which of the following helped to increase the population of australia significantly?

A. The World War II.

B. The gold rush.

C. The minimum wage.

D. The long wool boom.


参考答案:B

第6题:

Passage Five

Australia is nearly as large as the United States, but most of it is too dry for people to live in. Around

this dry part are large sheep and cow farms. A few of them are as large as the smallest states: of America.

Often the nearest neighbours are several hundred kilometers away.

The two-way radio is very important to people who live on these great Australian farms. It works much like a

telephone. A person can listen to someone else talk and then gives an answer. For example, people on

the large farms could talk to a doctor far away. They could tell the doctor about someone who was ill,

and the doctor could let them know how to look after the sick person.

As the large farms were so far from towns, the children could not go to school. Radio schools were

started for them in some places. At a certain time each day, boys and girls turn on their radios and

listen to teachers in cities far away.

Families on the large farms wanted to give news to their neighbours. The programme Round Robin

Talks by radio was started to keep families in touch with each other. They could talk about who was

going away and who was iii. The men could talk about their sheep and cows and how much money

the markets would pay for them. In many ways the radio became a newspaper for the farm people of Australia.

52. In the passage "the two-way radio" is______.

A. important to Americans

B. useful for children only

C. used as a telephone

D. only used by doctors


正确答案:C

此题为细节题。文章的第二段内可以找到句子:It works much like a telephone

第7题:

Look ! Those ( )are eating green ( )under the tree.

A、sheeps/ leafs

B、sheeps/ leafes

C、sheep/ leaves

D、sheep/ leafs


参考答案:C

第8题:

The long wool boom helped to increase the population of Australia significantly.()

此题为判断题(对,错)。


正确答案:×

第9题:

which of the following is not a native australian animal?

A. Sheep.

B. Kangaroo.

C. Wombat.

D. Koala.


参考答案:A

第10题:

You notice that the elapsed time for an important database scheduler Job is unacceptably long.The job belongs to a scheduler job class and window.Which two actions would reduce the job‘s elapsed time?()

A. Increasing the priority of the job class to which the job belongs

B. Increasing the job‘s relative priority within the Job class to which it belongs

C. Increasing the resource allocation for the consumer group mapped to the scheduler job‘s job class within the plan mapped to the scheduler window

D. Moving the job to an existing higher priority scheduler window with the same schedule and duration

E. Increasing the value of the JOB_QUEUE_PROCESSES parameter

F. Increasing the priority of the scheduler window to which the job belongs


参考答案:B, C

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