【单选题】This is the bag ________ my mother bought yesterday.
【判断题】无论是春季还是秋季立体吊袋栽培黑木耳,大棚内温度控制是决定成败的关键,尤其是菌袋密集程度高的情况下要严格控制温度,防止高温“烧菌”。( )
【单选题】下列表述不符合声音广播传播特性的是()。
【单选题】My mother bought that coat ______ a low price.
【判断题】根据声波的传播特性,真空中是能够听到声音的。
【单选题】My mother bought me a computer ______ [geim] on my ninth birthday.
【单选题】关于声现象,下列说法正确的是( )
A.
在空气中声音的传播速度是3×10 8 m/s
【简答题】小题1:My mother bought something in the shop. (改为否定) My mother _________ ___________ anything in the shop. 小题2:We stayed at home on Sunday morning.(改为一般疑问句) __________ you ___________ at home on Sunda...
【单选题】My mother bought a hat ______ my father. [ ]