期刊论文中,检索2000年至2013年且“作者=程焕文”的作品,检索结果是()
A.67篇
B.82篇
C.100篇
D.43篇
参考答案:B
单词拼写( 10分)
小题1: She often helped her mother __________(剥皮) potatoes for dinner.
小题2: She ___________________________(做) a delicious banana smoothie just now.
小题3:I need some ________________(帮助) with the turkey sandwich.
小题4:Can you cut up the ________________________________(番茄) for me, Sam?
小题5: They _______________(拍) many photos during the school trip.
小题6: She _______________(买) some gifts for her friends last weekend.
小题7: Who __________________________(赢) the first prize in yesterday’s singing competition?
小题8:I met a ______(著名的) actor when I visited the beach last weekend.
小题9: Last night we watched a wonderful movie about ________(生存) in the future.
小题10:___________(最后) they got to the mountain on foot.
患者,女,20岁,四环素牙,牙冠稳固,牙周情况较好,来院就诊要求进行美容性修复,经临床备牙,制作PFM修复体
瓷层烧结完成后发现有隐裂,经修补程序烧结裂纹消除,这是因为()
A.烧结完成后冷却太快
B.烧结完成后冷却太慢
C.烧结温度过高
D.烧结温度过低
E.升温速率较慢