题目内容
（请给出正确答案）
A.or
B.so
C.but
D.nor
参考答案
简答题官方参考答案
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更多“Choose a coordinating conjunction or a subordinating conjunction to combine each pair of simple sent…”相关的问题
together to establish the Environmental Protection Agency
(EPA) in response to the growing public demand for cleaner
water, air and land. Prior the establishment of 【S1】______
the EPA, the federal government is not structured to make 【S2】______
a coordinated attack on the pollutants that harm human health
and degrade the environment. The EPA was assigning the task 【S3】______
of repairing the damage already done to the natural environ
ment and to establish new criteria to guide Americans in making
a cleaner environment a reality.
Bom in the awake of elevated concern about environmental 【S4】______
mental pollution, the U.S. Environmental Protection Agency
opened its doors in downtown Washington, D.C., on December 2,
1970. EPA was established to consolidate in one agency the variety 【S5】______
of federal research, monitoring, standard-setting and
enforcement activity to ensure environmental protection. 【S6】______
EPA's mission is to protect human health and to safeguard
the naturally environment-air, water, and land-upon 【S7】______
which life depend. For more than 30 years, the EPA 【S8】______
has been working for a cleaner, healthier environment for the
American people.
From regulating auto emissions to ban the use of 【S9】______
DDT; from cleaning up toxic waste to protecting the ozone
layer; from increasing recycling to revitalizing inner-city brown-
fields, EPA's achievements have resulted in cleaner alr, purer
water, and well protected land. 【S10】______
【S1】
A、lactate dehydrogenase
B、pyruvate kinase
C、insulin
D、myoglobin
E、hemoglobin
A、M, N and α
B、M, N and β
C、α,β1 and β2
D、M, α and β
E、M, β1 and β2
A、encontrarse
B、se encontrarán
C、se encuentran
D、se encuentren
A、for
B、or
C、nor
D、but
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