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4. The cross-linking reaction of polyvinyl alcohol forms four water molecules for every B(OH)4 that cross- links two polymer chains. Given the sections of polyvinyl alcohol chains below, sketch how B(OH)4 cross-links the chains. Through what atom chain linkages are the C-C polymer backbones connected? CH CH₂ H O-H O-H H H CH₂ H-O. +B (OH)4 H H CH₂

十萬火急！！想問🙏🏻 明天就要會考了😭😭

13 Some of the knives and forks in the kitchen are dirty. Let's take the clean steak. to cut the (A) them (B) ones (c) other (b) another

這題怎麼做

A) -☑ 870 20. 有一個二次函數y=a(x-h)² + k,其中a、h、k為三數,且a<0。若此二次函 數在 x=-101 時,y值為0,在x=101時,y值大於0,則此二次函數在坐標平 面上的圖形的頂點在第幾象限? 開口向下 (A)- (B)二 • (101, +?) (C)三 > x (D) 四 (-101,0) 01

求解🙏 謝謝

sure he can get to Lisa's house-warming party at seven on time. (B) where (C) what (A) when 18. Helen went mountain climbing last weekend. She is really good at it; can't reach her at this moment to know if she's safe or not. (A) besides (B) however (C) for example (D) whether we still (D) what's more

想問15、17 orz

(A) are you (B) do you (C) does it (D) is it ✓ ✓ ( ) Actor David Piper became tired of talking about the movie 16. A BD about it many times. 【104年會考】 (A) he is famous B that he is famous ) Helen: after he was interviewed (C) that is famous for (D) he is famous for Can you turn off the TV? I can't study with the Troy: You can just go back to your room so you won't hear it. [103] (A)noise (B) heat (C)power (D)light ) I think the road ends here; it won't go any (A)closer (B) farther (C) faster (D)longer Shouldn't we turn back?【103年會考】 193 A

為什麼這題不是祈始句

going (B) 3. Smart Head, one of the hottest TV programs these days, 通過率 40% Hawaii if they can answer 20 questions correctly in 15 minutes. 如果 (A) have given (B) gives (C) giving 15分鐘內 people free plane tickets to hognibail Juo bail of *表條件: 以現代未 【103.] (D) to give

想問這題～ 答案是B （這句翻譯成中文是什麼意思🥲 查了但看不太懂

BAR. The new medicine that just came out on the market (A) and saved (B) has saved (C) saving thousands of lives. (D) to save

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39. 右圖的單擺擺長為40公分,靜止時小球離地高度亦為 40 公分。若先將擺線側拉與垂直線成60°,再釋放小球使其小公 自由擺動,當小球擺至最低點時擺線斷裂,則小球落地時 的動能應為多少焦耳?(設繩重與任何阻力均忽略不計, 且小球的質量為 m公斤,重力加速度為g公尺/秒2) (A) 0.4mg (B) 0.6mg (C) 40mg (D) 60mg 2 mv mgh to x mg 40公分: 40公分 60

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( ) 9. When I'm in trouble, Meg is always the first person that I'm really lucky to have her in my life. (A) takes (C) saves (B) lends (D) prepares me a helping hand.

請問是A嗎謝謝

6. It's sad that the father turns a (A) proud (C) blind eye to his son's cheating on the test. (B) dead (D) mad