分類
國中 解答
共 121,118 題
動物間的溝通方式
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從動物的部分骨骼化石,往往可以重建該動物的模型,並對其生活形態做推論。例如:以大腿骨上端的形態可推論其是否直立或可支持體重。因此從完整的動物頭骨化石中,可以推論的不包括下列哪一項?
前肢腳趾由四趾演化為單趾
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由馬的化石系列推測其演化,下列相關的敘述何者正確?
甲乙丙丁戊。
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下列生物所遺留下來的東西,哪些可以稱之為「化石」?(甲)三葉蟲休憩所留下的凹槽;(乙)古生物在岩壁上所留下的爬 痕;(丙)樹蕨所形成的煤礦;(丁)琥珀中的古代蚊子;(戊)恐龍的糞便;(己)岩層中的紫水晶;(庚)現今食肉蟻的洞穴。
根-蘿蔔
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下列何者並非野生甘藍經過育種形成各式型態的食用蔬菜?
去氧核糖核酸
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市面上出現所謂的「基因改造食品」,例如:將抑制咖啡因合成的基因植入咖啡樹細胞中,便可以產生無咖啡因的咖啡。試問此「抑制咖啡因合成的基因」主要是由下列哪一種物質所構成?
保有褐色蛙的性狀
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大雄進行青蛙無性生殖實驗,先取綠色蛙的卵細胞,並去除其細胞核,之後再取褐色蛙的細胞核植入綠色蛙的卵細胞中。則 以此種方式產生之幼蛙的性狀為下列何者?
Yellow.
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What color are the flowers in van Gogh's "Sunflowers" painting?
Singing songs.
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What is Vincent van Gogh famous for (著名)?
190
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Joe buys(買)some items(品項)on Fresh Online. How much does he need to pay(付)?
Lydia. She is a high school student and loves fast food.
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Who may need Fresh Online?
The cake.
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What is it in Step 3?
Milk.
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What is NOT in the batter?
Americans celebrate (慶祝) ________ on the fourth Thursday of November.
Michael always orders (點餐) steak at the restaurant because he loves ________.
Cindy: How about putting some watermelon on the pizza. Jane: That’s yucky. What does yucky mean?
Jay: Wow! The banana milk is yummy! ________ Mia: First, cut bananas. Second, put bananas, ice, and milk in a blender(攪拌機. Third, blend(攪拌)them.
Clerk: Good morning. ________ Jane: Yes. I want a burger, please.
Mia: The s’more is really yummy. Can I have _______ one? Mom: Sure.
Clerk: Do you like the yellow bag? Nina: No, I don’t like ________. I like the blue ________.
Jay: How can I make a cake? There isn’t ________flour at home. Meg: You can ________ some from Leo.
Tim: ________ is your favorite sport? Henry: Baseball.
There are two notebooks on the desk. ________ do you like?
No one likes Ted. He doesn’t have ________ friends.
Molly: Which ________ do you like, apples or oranges? Ann: Apples. It’s a healthy food.