单项选择题
He felt a bit （） because her life seemed completely out of balance.
A.depressed B.suppress C.thoughtful D.weakness
单项选择题 Purchasing the new production line will be a （） deal for the corporation.
单项选择题 Scientists are （） about the formation of coal.
单项选择题 If you do not know the subject, you will not understand what is said or written, even if English is your mother （） what is said or written.
