A：
B：
C：
D：
—What was Jim wearing at the party?
—Nothing _______. He was in his usual shirt and jeans.
下列属于青春期心理变化的是（ ）
下列几种农业技术手段中，属于辅助植物进行有性生殖的是（ ）
3×2=____
3×3=____
3×4=____
2×2=____
