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【判断题】
各种远期合约、期货、互换、掉期等都属于衍生金融工具。 ( )A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】对细菌的酶类试验下列描述中不正确的是
A.
尿素酶试验主要用于肠道杆菌科中变形杆菌属的鉴定
B.
过氧化氢酶（触酶）试验常用于革兰阳性球菌的初步分群
C.
硝酸盐还原试验主要用于厌氧菌的鉴别
D.
DNA酶试验可用于金黄色葡萄球菌、沙雷菌和变形杆菌的鉴定，三者均为阳性
E.
凝固酶试验主要用于葡萄球菌的鉴别
【单选题】Tom has been here ______ just one year, but his father has worked here ______ ten years ago. [ ]
A.
since; for
B.
since; since
C.
for; since
D.
for; /
【简答题】情景交际。 (Tom has just come from school. He is talking to his mother.) Tom: Can I go out and play now? Mother: If you have finished your homework. Tom: 1._____ Mother: Oh no! Just sit down and finish it ...
【单选题】---Tom failed the exam. ---Just his luck.__________
A.
He has to kill the fatted calf
B.
He has to face the music
C.
He must be the apple of his parents’ eye
D.
He must be a black sheep
【单选题】-------I heard that Tom failed in the driving test again . ------Just his luck ,_____
A.
He has to face the fatted calf
B.
He has to face the music
C.
He must be the apple of his parents' eye
D.
He must be a black sheep
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