Blue－green algae grow abundantly in salt marshes.
A、primarilyD
暂无解析
Some animals pant and sweat to speed evaporation of body moisture and thus cool themselves.
The megaphone(microphone) makes the voice sound louder because it points sound waves in one direction and keeps them from spreading out in all directions.
The Native American interpreter Sacajawea was a valuable member of the Lewis and dark expedition in 1805.
Creamoftartar酒石,aweakacid,canbeaddedtoeggwhitestohelpthemfoam泡沫whentheyarebeaten
Anoversight遗漏(miss,overslaugh)inproofreadingoftenresultsinprintederrors.
