A. Oxygen
B. Iron
C. Aluminum
D. Silicon
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A. Russia and Mongolia
B. Turkmenistan and Uzbekistan
C. Uzbekistan and Kazakhstan
D. China and Mongolia
A. Germany
B. China
C. Canada
D. None of above
A. 5
B. 7
C. 9
D. None of above
A. 199
B. 200
C. 201
D. 202
A. 3
B. 5
C. 9
D. 7
A. 175
B. 225
C. 125
D. 145
A. 22
B. 45
C. 25
D. 35
