【評論主題】19. By the end of this year, my parents _____ for 20 years. We are throwing a party for them.(A) wil

【評論內容】have Vp.p.– 過去完成式：（之前已經完成但未繼續）

【評論主題】15. I think we should ________ the interior designer’s suggestion.(A) go along (B) go with (C) go ar

【評論內容】

I think we should _________ the interior designer's suggesstions.

我想我們應該_________室內設計師的建議

【評論主題】11.空間中兩平面如果相交，會有兩個夾角，我們指的是銳角的那一個。平面x+2y+3z=4和下面哪一個平面的夾角最大？(A)3x+2y=1(B)2y+z=2(C)3x+z=3(D)2x+y+z=4

【評論內容】

我這裡給提示：

竟然是問平面夾角我們就用法向量來計算。