【华慧考博】考博英语每日一练（12.7）考博加油！1. The energy gained from the sun can then be used during the night to enable the necessary chemical reaction to______ in its body.
2. In protest, blacks and _____ whites sat at the counters of these restaurants and refused to move until they were served.
1. For make adobe bricks, workers mix sand and clay or mud with water and small quantities of straw, grass, or a similar material.