正方形（ ）条边都相等，四个角都是（ ）；长方形（ ）边相等，四个角都是（ ）。
四；直角；对；直角
You can't imagine _____when they received these nice Christmas presents.
A．how they were excited
B．how excited they were
C．how excited were they
D．they were how excited
一哺乳期患者，发现 * * 右上象限有一直径4厘米的肿块，疼痛两天，诊断为：
A．乳癖B．乳痈C．乳岩D．乳疬E．乳痨
