Lembaran formula, langkah kaedah utama untuk setiap topik dan 16 soalan latihan, dengan penyelesaian penuh di bahagian belakang.
“Many people think bats are blind. In fact, bats can see, and many species also use echolocation, sending out sounds and listening for the echoes, to find their way in the dark.” What is echolocation, according to the passage?
The author writes: “Some readers will say a four-day work week would hurt productivity. Trials in several companies, however, found that output stayed the same while staff were less stressed.” How is the passage structured?
Sepasang kasut berharga $133.00. Ia dijual dengan diskaun 15%, dan cukai jualan 7% ditambah pada harga jualan. Berapakah harga akhir P? Bundarkan kepada sen terdekat.
Dalam sesuatu kursus, kerja rumah dikira 15%, peperiksaan pertengahan 35% dan peperiksaan akhir 50% daripada gred. Seorang pelajar mendapat 65% dalam kerja rumah, 83% dalam peperiksaan pertengahan dan 72% dalam peperiksaan akhir. Berapakah gred kursus G? Bundarkan kepada satu tempat perpuluhan.
Otot manakah yang merupakan ekstensor utama siku?
Selepas kecederaan pada epikondil medial siku, seorang pesakit mengalami kebas pada jari kelingking dan kelemahan abduksi jari. Saraf manakah yang terjejas?
Apakah ruang mati anatomi?
Orang yang sihat berdiri dengan cepat selepas berbaring. Tindak balas refleks manakah yang mencegah pengsan?
Why does PCR use a DNA polymerase taken from bacteria that live in hot springs?
A person's body temperature starts to fall in a cold room. Which responses help bring it back up?
What are isomers?
A catalyst is added to an exothermic reaction. How does the energy diagram change?
Choose the correct word: “From her smile, I ___ that the news was good.”
In the title The Art of Nursing, why is “of” not capitalised?
Choose the meaning of the word in bold: “Nurses must protect patient confidentiality.”
Choose the meaning of the word in bold: “After treatment the patient’s leukaemia was in remission.”
Jawapan: C · Using echoes of sounds to find the way
The passage explains echolocation as sending out sounds and listening for the echoes to find the way in the dark.
Jawapan: B · An objection is stated and then answered with evidence.
The author first states a possible objection and then responds with evidence from company trials, a counterargument-and-rebuttal structure.
Jawapan: P = 121 $
Diskaun dan cukai jualan: diskaun d% meninggalkan (100 − d)% daripada harga; cukai t% menambah t% daripada harga selepas diskaun. Kerjakan mengikut urutan itu: harga × (1 − d/100), kemudian × (1 + t/100). Bundarkan wang kepada sen terdekat hanya pada akhirnya.
Jawapan: G = 74.8 %
Purata berwajaran: apabila bahagian dikira dengan peratusan yang berbeza, darabkan setiap skor dengan pemberatnya (sebagai perpuluhan) dan tambahkan. Min biasa bagi skor hanya betul apabila setiap bahagian dikira sama rata.
Jawapan: B · Triseps brakii
Triseps brakii melekat pada olekranon ulna dan mengekstensi siku. Biseps dan brakialis ialah fleksor siku.
Jawapan: C · Saraf ulnar
Saraf ulnar melalui belakang epikondil medial. Ia membekalkan kebanyakan otot intrinsik tangan, termasuk interosei, dan kulit jari kelingking.
Jawapan: C · Isi padu saluran pengaliran tempat tiada pertukaran gas berlaku
Ruang mati anatomi (kira-kira 150 ml) ialah udara dalam hidung, trakea dan bronkus. Ia digerakkan dengan setiap hembusan tetapi tidak pernah sampai ke alveoli.
Jawapan: B · Refleks baroreseptor menaikkan kadar jantung dan vasokonstriksi
Darah bertakung di kaki dan tekanan jatuh; baroreseptor menjana kurang, yang meningkatkan aktiviti simpatetik dan mengurangkan aktiviti vagus dalam beberapa saat, menaikkan kadar jantung dan tonus vaskular.
Jawapan: A · It survives the high temperatures used to separate the strands
Each PCR cycle heats the mixture to separate the DNA strands. Most enzymes would denature, but polymerase from heat-loving bacteria (such as Taq polymerase) stays active through many cycles.
Jawapan: B · Shivering and narrowing of blood vessels in the skin
Shivering produces heat by rapid muscle contractions, and vasoconstriction in the skin reduces heat loss. Sweating and vasodilation are used when the body is too warm.
Jawapan: D · Compounds with the same molecular formula but different structures
Isomers have the same number and type of atoms arranged differently, which gives them different properties. Glucose and fructose are isomers. Isotopes are about neutrons, not structure.
Jawapan: D · The peak is lower, but the energy of reactants and products stays the same
The catalyst lowers the activation energy (the peak), but the reactant and product energies are unchanged, so ΔH is the same. It speeds up the reaction without changing how much energy it releases.
Jawapan: A · inferred
To infer is to draw a conclusion from clues. To imply is to suggest something without saying it, which is what the speaker does.
Jawapan: B · Short prepositions in the middle of a title are usually lowercase.
In title case, short articles, conjunctions and prepositions are lowercase unless they are the first or last word. Nouns, verbs, adjectives and adverbs are capitalised.
Jawapan: B · The privacy of personal information
Confidentiality means keeping a patient’s personal and health information private.
Jawapan: D · A period when signs of disease lessen or disappear
Remission is a period in which the signs and symptoms of a disease decrease or disappear.
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