叶绿体所含的色素可以用水提取。
参考答案:错
They are developing new types of plants that can be grown in poor soil or even sand,and that are
less to be attacked by pests and diseases.
A.possible
B.probably
C.likely
D.maybe
冬季如油温过低需现场启动油泵及加热器进行循环加热,此项工作应在磨机起动前()小时进行。