Most of the injuries were caused by（）
A: the meteor sonic boom.
B: atmospheric impact of a small asteroid.
C: an asteroid zooming close by the Earth.
D: flying glass.
A: the meteor sonic boom.
B: atmospheric impact of a small asteroid.
C: an asteroid zooming close by the Earth.
D: flying glass.
举一反三
- Research is under way to （） A: discover what causes the sonic boom B: find a means of eliminating the sonic boom C: produce the sonic boom at low altitudes D: reduce the sonic boom to tolerable levels
- Glass classification by use is the most common classification method. What kind of glass can be classified by this classification method? A: Daily glass. B: Architectural glass. C: Technical glass. D: Glass fibre.
- What's Kirkwood Gap A: A belt located between Mars and Jupiter. B: Different regions in the asteroid belt. C: The mysterious gap between different regions of the asteroid belt. D: Ceres, a ball about 637 miles in diameter.
- Articles made of pressed glass are thicker than and not as delicate<br/>as ___<br/>made of blown glass. A: those B: them C: are D: were
- asteroid星形的、spheroid球状的、conoid圆锥形的中的后缀oid表示（ ）。