【判断题】【消耗次数：1】
镁在植物中韧皮部汁液中浓度较低，再利用程度低。
①
正确
②
错误
参考答案：
复制
纠错
相关题目
【单选题】
循环经济是一种低开采、高利用、低排放、再利用的经济模式，其物质流程是（ ）。
①
再生资源—污染排放—产品
②
资源—污染排放—产品
③
资源—产品—再生资源的反馈式
④
资源—产品—污染排放
随机题目
【单选题】
4. The body can’t storevitamin C. So it is_________ to have a fresh supply every day.
①
essential
②
visible
③
ultimate
④
profound
【单选题】
8.Do you have any idea what he meant? I really can’t ______ what he said at this morning’s meeting.
①
figure on
②
figure out
③
find out
④
find
【单选题】
7. The fall in price is directly ______ to the increase in output.
①
concerned
②
connected
③
related
④
united
【单选题】
10.We should see ourselves as part of nature rather than in ______ with it.
①
argument
②
connection
③
conflict
④
crash
【单选题】
14.Anyone can borrow magazines from the club ______ he returns them in a week.
①
as long as
②
so that
③
unless
④
as far as
【单选题】
9. They have ______ each other for a long time.
①
corresponded on
②
corresponded with
③
communicated with
④
kept writing
【单选题】
6.The old lady fainted on the street and found herself in the first aid room when she came_________.
①
across
②
over
③
in
④
to
【单选题】
In Britain, the season of the year is probably _____ spring.
①
later
②
last
③
latter
④
late