A. shape B. area C. baring D. distance
A. troposphere B. ionosphere C. exosphere D. thermosphere
A. Mercury and Venus B. Earth and Pluto C. Mars and Neptune D. Jupiter and Saturn
A. oxidation B. hydrolysis C. carbonation D. solution
A. 1 to 1.5 B. 1 to 1 C. 1 to 4 D. 1 to 10
A. more B. equal C. less D. None of these
A. mediterranean climatic regions B. china type climatic regions C. steppe type climatic regions D. equatorial regions
A. 0-30? latitude B. 30-60? latitude C. 60-90? latitude D. 90? latitude
A. 149,502,000 km B. 150,503,000 km C. 148,000,000 km D. 150,000,000 km
A. the Pyranees B. the Balkans C. the Carpathians D. the Urals