A:图中细胞一定在质壁分离
B:图中①表示细胞膜
C:本实验没有对照
D:图中②的体积可能在变大
选择单词,补全短文
hot China winter people old east
Shanghai is the biggest city in ____.It's in the ____ of China. It's got a lot of ____.It's an ____ city. It's very ____ in summer and it's cold in ____.
两宋时期,劳动者多穿小袖狭身的短衣,主要是因为()
讠____、____、____ 阝____、____、____
日____、____、____ 口____、____、____
读一读,写一写(仿写比喻句)
蓝蓝的天空,电杆之间连着几痕细线,多么像五线谱啊!停着的燕子成了音符,谱成了一支正待演奏的春天的赞歌。