下列敘述正確的有幾項?(甲)若a的相反數為一a,則一a＜0(乙)lal為a的相反數(丙)若a、b互為相反數,則|a|=|b|(丁)若a、b互為相反數,則a＞b(A)1 (B)2 (C)3 (D)4

問題詳情

5.下列敘述正確的有幾項?
(甲)若a的相反數為一a,則一a＜0
(乙)lal為a的相反數
(丙)若a、b互為相反數,則|a|=|b|
(丁)若a、b互為相反數,則a＞b
(A)1
(B)2
(C)3
(D)4 項

參考答案

答案：A
難度：計算中-1
書單：沒有書單，新增

內容推薦

台灣中油股份有限公司2019年8月份單月營業額為新台幣86億元,此營業額可以科學記號表示成(A)86x108(B)8886x107 (C) (D)
Peter: The little girl over there is crying.Amber: _______(A) Is she OK?(B) Is she having fun?(C)
Ms. Chen: What are you doing, girls?Julie and Amanda: _______(A) They are shouting in the car.(B)
Gina: Are you buying this bag?Gloria: Yes, it is for you. Oops! _______(A) Please open your eyes.
Fiona: _______Max: Emily is reading in the room.(A) Where is Emily’s room?(B) Is Emily reading in
Ms. Lin: _______ is it?Louie: It is eight twenty _______.(A) What； ╳(C) What； o’clock(B) What tim
Dad: _______a flower shop near here?Son: Yes, there is.(A) What is(C) Is that(B) Where is(D) Is t
Ms. Chen: Are these flowers for _______?Leo: Yes, Ms. Chen. Happy Teacher’s Day!(A) my(C) me(B) h
Rose: Is Mr. and Mrs. Brown’s house big?Rosa: Yes, ________ house is big.(A) it’s(C) his(B) our(D
Ms. Brown：_______ Bob and Jim holding?Brian：The gifts from their friends.(A) Where is(C) How are(

內容推薦