如图为玉米种子剖面结构，图中表示胚乳的序号是（ ）
A：①
B：②
C：③
根据拼音写出词语。
bì yù
chuí xià
jiǎn dāo
____
写出反义词
节省—____ 容易—____
一Excuse me, but where's Mrs. Liu? I want to ask her for some advice. 一She the library. You can find her there.
