Day 1825．China’s year-on-year growth in consumer price index ________ an almost eight-year high at 4.5 percent in November ________ higher prices of pork and other meat ，said the National Bureau of Statistics on Tuesday.
A．hit; but for

B．beat; due to
C．beat; but for D．hit; due to
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Day 1824．The event is a clear indication that food safety is a big problem; nobody can ________ all foods are secure to us, but we are sure that the situation is turning for the better.
A．acknowledge B．guarantee
C．identify

D．clarify
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Exploration最近发表了香港城市大学徐臣杰教授课题组的通讯文章“3D-printed microneedles with open groove channels for liquid extraction”。该工作开发了一种具有液体提取功能的凹槽通道微针阵列，并用3D打印的方法进行了制造。该阵列中所有的微针都被设计为金字塔型，并具有4个凹槽。完成设计流程后，用3D打印机进行了切片和打印工作，其中印刷材料为VeroBlue树脂，支撑材料为SUP706。https://t.cn/A664XSrN