Translate the following English into Chinese. Automatic block system is that within automatic block district, each section is divided by color light passing signals into several consecutive subsection or block. The occupation of subsection by train is authorized by the permissive aspect of the color light passing signals. Automatic block system shortens the space interval between trains in the same direction and increases running capacity at sections. But on single track lines where trains running in both directions on the same track, the efficiency of automatic block system is not so evident.
A、more and sellers receive more than they did before the tax.
B、more and sellers receive less than they did before the tax.
C、less and sellers receive more than they did before the tax.
D、less and sellers receive less than they did before the tax.
A、As
B、It
C、That
D、What
A、$342,150 (342,150美元)
B、$340,125 (340,125)
C、$270,000 (27万美元)
D、$330,000 (33万美元)
A、Variety diversification of dairy cattle
B、Promotion and application of new technology
C、Miniaturization of beef cattle breeds
D、Cow breeds replace beef breeds
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