正常卵泡发育成熟时体积显著增大，可达
A．10～14mmB．15～20mmC．25～30mmD．30～35mmE．35～40mm
参考答案：B
政府土地出让行为是政府资产存在形式的改变。（）
In this hotel, the bread and butter ______served for breakfast. Meanwhile, a knife and fork _____very useful for a foreigner.
A．is; is
B．are; are
C．is; are
D．are; is
