在Word中,如果删除文档中一部分选定的文字的格式设置,可按组合键_____。 A.
Ctrl+Shift B.
Ctrl+F6 C.
Ctrl+Shift+Z D.
Ctrl+Alt+Del

单项选择题People have same understandings about language learning.（ ）A.对B.错

单项选择题Which of the following statements is(or are) right? ( ) A. Historic bays are defined in the UNLOS. B. Historic bays are defined in the Geneva Convention on the Territorial Sea and the Contiguous Zone. C. There exists certain definition of historic bays set by rules of international law. D. If the title to a historic bay be established, a coastal State may draw a closing line which forms the baseline across the mouth of the bay and the area inside the closing line constitutes the internal waters of that State.

单项选择题‏ 一元函数微分学的三个中值定理的结论都有一个共同点，即‍

不定项选择‏在卸油作业时，司泵员应先打开泵房阀门，再打开罐区阀门‌

不定项选择To put it short means to make the object shorter.