【单选题】下列说法正确的是( )。
A.
生态监测是比生物监测更复杂、更综合的一种监测技术
C.
生态监测是利用“生态”来作“仪器”进行监测环境质量
【简答题】A fall B decrease C refuse D rise
【判断题】道教产生于春秋战国时代,是老子创立的。()
【简答题】You ______ her at the beginning, but now it is too late. A.ought to refuse B.have ought refuse C.ought to have refused D.ought have refused
【单选题】A refuse collection becomes a "sanitary engineer" because ______.
A.
"refuse collector" is a job people don't like to do
B.
"refuse collector" is too formal
C.
people enjoy freedom in their choice of words
D.
the elegancy of language is admired by the American people
【单选题】Which grasslands are widely introduced in this unit?
B.
Both the Hulunbuir and Xilingol grasslands.
【简答题】宏观生态监测和微观生态监测两者之间有何区别与联系?
【单选题】The environmentalists said wild goats’ __________ on the vast grasslands was a good indication of the better environment.