至少有两边相等的三角形是（　　）

甲、乙两盏灯接在家庭电路上，若它们消耗的电能相等，则它们的（   ）

我国发现的首例甲型H₁N₁流感确诊病例在成都某医院隔离观察，要掌握他在一周内的体温是否稳定，则医生需了解这位病人7天体温的           （    ）

读一读，判断句子正误。
    Peter draws a monster(怪物). It's tall and strong. It has a big head and a big body. Its earsand eyes are small. Its mouth is very big. Its teeth(牙齿) are sharp(锋利的). It has two long arms. Its arms arevery strong. It has two big hands. It has two long legs and two big feet. Itcan run very fast(快).

$\cos 300°$等于（   ）