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奧林匹亞化學

奧林匹亞數學

奧林匹亞物理

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30. The 5' → 3' exonuclease activity of E. coli DNA polymerase I is involved in (A) formation of a nick at the DNA replication origin (B) formation of Okazaki fragments (C) proofreading of the replication process (D) removal of RNA primers by nick translation (E) sealing of nicks by ligase action

29. Which mechanism is used to repair a thymidine dimer in DNA? (A) mismatch repair (B) base-excision repair (C) nucleotide-excision repair (D) direct repair (E) more than one is used for this type of lesion

28. Splicing of introns in nuclear mRNA primary transcripts requires: (A) a guanine nucleoside or nucleotide (B) endoribonucleases (C) polynucleotide phosphorylase (D) RNA polymerase II (E) small nuclear ribonucleoproteins (snurps)

(c)(7%) Following the previous question, find out all the Pareto optimal pairs, if any, that could be implemented by the financial market (i.e., through private borrowing and saving when both are price-takers), and the corresponding interest rate.

(b)(6%) Suppose that they have no access to the financial market, but can make the following arrangement. The father gives the son an amount of $R in the red envelope in 2021, and the son gives the father some pocket money $P in 2022, where R and P ≥ 0 (a negative amount means the opposite flow of money). Describe all the Pareto optimal pairs (R, P), if any, that both would agree, and illustrate in a figure. (There is no need to compute the exact number.)

V.A father-son pair use the following income streams to finance their living in 2021 and 2022. The father earns $100 in 2021, but plans to retire early and so will only earn $20 in 2022. The son is undergoing a training program and earns only $20 in 2021, but will finish the training and earn $100 in 2022. By consuming $c1$ in 2021 and $c2$ in 2022, the father obtains utility $UF = \min\{c1, c2\}$, and the son obtains $US = \ln c1 + 0.8 \ln c2$. Both $c1$ and $c2$ are continuous. (a)(4%) Suppose that they can save or borrow at zero interest rate, which is close to current situation. How much, if any, would the father and son, respectively, optimally save or borrow in 2021?

test

講師：tina

簡介：test

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講師：【站僕】摩檸Morning.

簡介：測試描述

課程學習1

講師：【站僕】摩檸Morning.

簡介：課程學習1課程學習1課程學習1課程學習1課程學習1 課程學習1課程學習1課程學習1課程學習1課程學習1 課程學...

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自然

描述：自然筆記本

9.一位27歲男性因為牙齦出血不止來到醫院，血液檢查發現血紅素為8.2 gm/dL，白血球1250/µL，其中promyelocyte 18%， segmented neutrophil 2%，monocytes 8%，lymphocytes 72%，血小板21000/µL。骨髓穿刺檢查證明為acute promyelocytic leukemia。下列各選項，何者是治療此病人所必須的？ ①platelet transfusion ②chemotherapy ③all-trans retinoic acid (A)①② (B)②③ (C)①③ (D)①②③

44.下列何種病人得到急性骨髓性白血病的機率不會較一般人高？ (A)唐氏症（Down syndrome） (B)類風濕性關節炎（rheumatoid arthritis） (C)長期接觸苯（benzene） (D)過去用過 etoposide（VP-16）

41.下列有關急性前骨髓細胞白血病（acute promyelocytic leukemia）的敘述，何者錯誤？ (A)容易發生瀰漫性血管內凝血（DIC） (B)帶有染色體異常t（5;7） (C)有異常之PML/RARα融合基因 (D)以反轉式維甲酸tretinoin治療，可以達到完全緩解

1. Production efficiency occurs when production ________. (A)is at a point beyond the production possibilities frontier (B) is on the production possibilities frontier or inside it (C)is at any attainable point (D)is on the production possibilities frontier

2. Suppose the price of a football is $20.00 and the price of a basketball is $10.00. The ________ of a football is ________. (A)relative price; 2 basketballs per football (B) relative price; 1/2 basketball per football (C)opportunity cost; $20.00 (D)opportunity cost; $10.00

(二)在進行酸鹼滴定時，選擇適當的指示劑是減少滴定誤差的關鍵。請說明選擇酸鹼指示劑的一般性原則為何？（10 分）