高粱在什么时期已广为栽培？又在什么时期成为我国北方的一大粮食_爱下问搜题

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问题问答题简答题

高粱在什么时期已广为栽培？又在什么时期成为我国北方的一大粮食作物？

答案

参考答案：

高粱在西周时已广为栽培；

汉代已成为我国北方的一大粮食作物。

单项选择题

甲乙双方约定，甲方于2000年5月1日合同义务履行期限届满，乙方于2000年6月1日合同义务履行期限届满，由于甲方履行合同不符合合同的约定，乙方拒绝履行，一直到6月15日还未履行合同，则下列表述正确的是（）。

A．甲方属违约行为

B．乙方属违约行为

C．甲方、乙方都属违约行为

D．甲方、乙方都不属违约行为

阅读理解

阅读理解。

The five clearest role-related behaviours of travellers (in order of relative importance )

Tourist	takes photos, buys souvenirs, goes to famous places, stays briefly in one place, does not understand the local people
Traveller	stays briefly in one place, experiments with local food, goes to famous places, takes photos, explores places privately
Holidaymaker	takes photos, goes to famous places, is separated from the local society, buys souvenirs, contributes to the visited economy
Jet-setter	lives a life of luxury (奢侈) , concerned with social status, seeks physical pleasures, prefers communicating with people of his/her own kind, goes to famous places
Businessperson	concerned with social status, contributes to the economy, does not take photos prefers interacting with people of his/her own kind, lives a life of luxury
Conservationist	interested in the environment, does not buy souvenirs, does not exploit the local people, explores places privately, takes photos
Explorer	explores places privately, interested in the environment, takes physical risks, does not buy souvenirs, observes the visited economy
Overseas student	experiments with local food, does not exploit the people, takes photos, observes the visited society, takes physical risks
International athlete	is not separated from their own society, does not exploit the local people, does not understand the local people, explores places privately, searches for the meaning of life
Overseas journalist	takes photos, observes the visited society, goes to famous places, takes physical risks, explores places privately

1. Which of the following behaviors do Tourist, Traveler and Holidaymaker share?

A. Stay briefly in one place.
B. Buy souvenirs.
C. Go to famous places.
D. Explore places privately.

2. We can learn that overseas students .

A. are curious about the society they visit
B. like to do experiments with local food
C. take photos as their teachers have instructed
D. enjoy taking physical risks because they are brave

3. According to the passage, which of the following is true?

A. Three groups are interested in exploring places privately
B. More than two groups live a life of luxury.
C. Six groups are fond of taking photos.
D.Two groups don't like buying souvenirs.

4. The sentence "businessperson prefers interacting with people of his/her own kind" means
that ______.

A. he wants to be loved by people of his kind.
B. he loves quarrelling with people of his kind
C. he wants to make good friends with people of his kind.
D. he wants to talk with people of his kind and understand each other.