下列四种植物组织中，具有输导功能的是（ ）
A：
B：
C：
D：
某同学列出的几种组织及举例，错误的一项是( )
小黑熊爬到8米高的树顶，每次只能爬上2米，还要滑下1米，那么，它往上爬____ 次才能爬到树顶．
China began to open to the outside world in the late 1970s. _________, there have been great changes in the country.
⑴plant vegetables ____ A. in the park
⑵watch a film ____ B. at the zoo
⑶have dinner ____ C. at the cinema
⑷watch animals ____ D. on the farm
⑸fly a kite ____ E. in the restaurant
