问题
选择题
光合作用产生的气体是( )
A.氮气
B.氢气
C.氯气
D.氧气
答案
光合作用的表达式如图所示:因此光合作用吸收的气体是二氧化碳,释放的气体是氧气.
故选:D.
光合作用产生的气体是( )
A.氮气
B.氢气
C.氯气
D.氧气
光合作用的表达式如图所示:因此光合作用吸收的气体是二氧化碳,释放的气体是氧气.
故选:D.
Passage Two
Which of the following factors did NOT contribute to the sea disaster
A.Andrea Doria was not very far from other ships.
B.It was dark and foggy.
C.Andrea Doria was going at a fast speed.
D.Andrea Doria’s killer had an ice-breaker like bow.