資訊推薦

• 1.有關酵素的性質，下列敘述何者錯誤？(A)酵素主要成分是蛋白質 (B)酵素與受質作用後，即失去活性(C)一種酵素只能催化一種反應 (D)酵素低溫冷藏後，恢復常溫仍可繼續作用
• 1.下列關於染色體的敘述，何者正確？　(A)是由蛋白質與核醣核酸所構成　 (B)平時分散成細絲狀，在細胞分裂時期則以粗短的染色體型式存在(C)染色體數目愈多，則生物愈高等　 (D)DNA可讓長長的蛋白
• 14.如右圖，人以50 kgw的力推車，但車子仍靜止不動，已知此車重800 kgw，則下列敘述何者錯誤？  (A) 車子給人的反作用力為50公斤重(B) 車子給地面的作用力為750公斤重(C) 地面給
• 1.亞硫酸的化學式為 H2SO3，則此物質不包含何種原子？(A)碳原子 (B)氫原子 (C)硫原子 (D)氧原子
• 1. 銀灰色的鐵製品常常在使用一段時間之後變成黃褐色，過程中發生了什麼變化？原因為何？ (A)銀灰色的是Fe，黃褐色的是FeO，前後發生化學變化　(B)因為顏色改變，故為物理變化　(C)反應前後遵守質
• 2.Ken _____ the doorbell, but no one answered. (A) invited (B) glued (C) reported (D) rang
• 3.I haven’t _____ Paul since we graduated. (A) heard of (B) heard from (C) showed off (D) kept from
• 4.The volleyball player is six feet and two ______ tall. (A) kilometers (B) meters (C) inches (D) ki
• 5.Matt is _____ about this song; he listens to it at least twenty times before going to bed. (A) afr
• 6.I can’t _____ Elsa. If you see her, please let me know. (A) trust (B) report (C) reach (D) separat
• 7.A: Has Jimmy ever taken a plane? B: Yes, he _____ a plane three times. (A) was taken (B) takes (C)
• 8.A: How long have the men known each other? B: They have known each other since they _____ little.
• 9.Were those students surprised _____ the news? (A) in (B) at (C) to (D) with
• 10.Phoebe has been interested _____ playing baseball since she was a child. (A) to (B) at (C) with (
• 11.There is lots of snow here in winter, _____? (A) isn’t there (B) isn’t it (C) is there (D) is it
• 12.Amy’s never been to Canada, _____? (A) has she (B) hasn’t she (C) is she (D) isn’t she
• 13.Brian _____ 3 kilograms over the past 4 months. He looks much healthier now. (A) loses (B) will l
• 14.Reading the questions carefully is the key _____ a good grade. (A) to get (B) to getting (C) gett
• 15.I haven’t decided _____ my friend’s birthday gift. (A) to (B) in (C) at (D) on
• 16.Most American kids will go _____ on Halloween. (A) trick-or-treat (B) to trick-or-treat (C) to tr
• 17.Ken just bought a new iPhone 8. He loves to _____ to his friends. (A) dress it up (B) show it off
• 18.My mom told me _____ we’re going to Canada next summer. My sister and I feel so excited. (A) whet
• 【題組】20.(A) is keeping (B) keeps (C) was keeping (D) has kept
• 【題組】21.(A) make (B) making (C) makes (D) made
• 【題組】22.(A) invites (B) invited (C) has invited (D) is inviting