Answer:

Part 1 E-C:

1. 23,400,023,948

2. 349,713,295

3. 456,034,521,112

4. 54,623,432

5. 900,099,887

Paert 2 C-E:

1. 34'5121'3212

2. 668'8634

3. 540'0945

4. 4455'5554'3222

5. 6'0008'8814

Part 3 Passage interpreting

中國主要有七大水系,它們分別是長江流域、黃河流域、松花江流域等。這七大水系與河流的年流量總計達27120億立方米，位居世界第六位。

China has 7 major river systems，the Yangtze River, the Yellow River, the Songhuajiang River, etc. The annual flow capacity of these rivers totals to 2, 712 billion cubic meters, which ranks the 6th in the world.

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