设施园艺的英文是open field culture，太空农业的英文是plant factory。（)

世界园艺设施发展的三个阶段是原始、() 有飞跃。

A.It’s unusual to see them training at the sports field on a cold day

B.It’s not unusual to see them training at the sports field on a hot day

C.It’s not unusual to see them training at the gymnasium on a hot day

D.It’s not unusual to see them running at the sports field on a cold day

The conference is aimed at exploring the role women play in science and the impact women have had in shaping it to the field it is today. Topics are open to every field in science, with suggestions in gender, social roles, leadership, and volunteer roles. Please limit abstracts to less than 500 words. All proposals must be received by Friday, April 21 at noon to be considered.

Please submit your abstracts and correspondence to shirley@awsa.org.

When is the deadline？

A．In March

B．In April

C．In May

D．In June

Which of the following statements is not tree？

A．China has the ambition to become a giant in the aviation industries.

B．The first homemade jetliner of China will be on the market later this year.

C．China plans to open new overseas markets in Asia, Africa and South America.

D．Airbus has more market share than Boeing in the field of China's civil aviation.

园艺设施的主要类型有( )、( )、( )、( )、( )和( )等。

A.性能优良

B.轻便耐用

C.价格合理

D.环保无毒