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【单选题】
Which sentence below best expresses the essential information in the highlighted sentence in paragraph 4? Incorrect choices change the meaning in important ways or leave out essential informationA.
The wetlands completely cover the landscape, making it difficult to grow crops and grass for grazing
B.
The native grasses that grew in the potholes have been replaced with crops that are more beneficial
C.
Except for the potholes region, the entire prairie has been converted to cropland and grazing land
D.
Even though a large portion of the prairies is used for crops and grazing, the small ponds remain
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】关于嗜肺军团菌特征叙述,错误的是:
A.
革兰阴性杆菌,无鞭毛
B.
专性需氧,在2.5%~5% CO2气体条件下生长良好
C.
分离常用培养基为缓中液活性炭酵母浸液琼脂(BCYE)
D.
在自然界可长期存活(特别是在水中)
E.
通过飞沫或气溶胶吸入感染
【单选题】A: Could you spare a few hours to help me clean the house? B: ______.
A.
No, the house is clean.
B.
Nobody could help you.
C.
No, you should rely on yourself.
D.
I'm really busy with school these days. How does this Saturday sound?
【单选题】There are many folk cultures on the island, which are_____distinct from the mainland.
A.
clearer
B.
clearly
C.
clearest
D.
cleared
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