制作叉烧酥时将水油皮包入油酥心后再开酥（）叠成酥皮。
A、两次“三”
B、三个“四”
C、两个“四”
D、三次“四”
参考答案：C
The government has taken a series of measures to _________ people’s needs in our country, which has provided good opportunities for many companies.
A．explain
B．expand
C．export
D．expect
阵发性室上性心动过速的心电图诊断，下列叙述哪项不正确（）
A．心室率150～250次/分
B．节律一般规则，但亦可有不规则
C．QRS波群形态可不正常
D．可见到逆行P波
E．起始及终止突然
