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9.在坐標平面上,點A、B、C的坐標分別為( - 1,k)、(1,2)、(1,1),若向量 的內積為0,則k = (A) - 1 (B)0 (C) (D)1
問題詳情
9.在坐標平面上,點A、B、C的坐標分別為( - 1,k)、(1,2)、(1,1),若向量
的內積為0,則k =
(A) - 1
(B)0
(C)
(D)1
參考答案
上一篇 :
8.點P(0, - 3)在 (A)第二象限 (B)第三象限 (C)x軸上 (D)y軸上
下一篇 :
2.可怕的(A) curious (B) sacred (C) scary
資訊推薦
3.收集(A) gather (B) gasp (C) invite
4.承諾(A) promise (B) resist (C) trick
5.由來(A) orange (B) origin (C) onion
6.凝視(A) start (B) stand (C) stare
7.指派(A) design (B) assign (C) resign
8.眼淚(A) tear (B) truth (C) touch
9.輕拍(A) chat (B) bet (C) pat
10.建議(A) suggest (B) angry (C) lower
1.() If I ________ a bird, I could fly high in the sky.(A) am (B) were (C) be (D) are
2.()When Stella’s friend said that ________ her friend was a wonderful thing, Stella was happy.(A) b
3.()After Vera moved away from home, she realized ________ she missed her family.(A) badly what (B)
4.()Louis got up late this morning. When he arrivd at the train station, the train ________ .(A) had
5.()Doctors suggest that children ________ more water and fewer soft drinks.(A) drank (B) drink (C)
【題組】2. dress __________
【題組】3. look for __________
【題組】4. shame __________
【題組】5. tight __________
七. 生活英語Halloween單字題 (每題2分,共10分) 1. ______不給糖就搗蛋 (A) trick or treat (B) threat or treat (C) tell or t
2. ______女巫 (A) watch (B) within (C) witch
3. ______靈魂 (A) sore (B) soul (C) sober
4. ______南瓜 (A) pie (B) pond (C) pumpkin
5. ______南瓜燈 (A) Jack-o’-lantern (B) Jack-o’-light (C) Jack-o’-lamp
2. Even though he has become rich and famous, he still lives a _____ life.(A) side (B) shine (C) sim
3. My mom was like my _____. She always led me to the right direction when I felt lost.(A) lighthous
4. A: Look! Smoke is coming out of your cellphone! B: Oh, no! It’s _____!(A) filled (B) fried (C) fa