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【单选题】
CRISPR allows you to knock out any gene or, with a little more e ort, to add a desirable trait by inserting a gene in a specific place in a genome.A.
destroy a machine or damage it so that it stops working
B.
knock down a boxer for a count of ten
C.
eliminate
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举一反三
【单选题】This segment of the arterial intima of a coronary vessel is observed at autopsy in a 56-year-old man who died suddenly on rising in the morning. Which of the following abnormalities is considered a ma...
A.
congenital vascular muscle weakness
B.
cystic medial necrosis
C.
hypercholesterolemia
D.
medial calcification
E.
syphilis
【简答题】醛固酮是由( )分泌的一种激素,它的作用部位是( ),主要作用是( )。
【单选题】A 56-year-old man is surgically treated by a four-vessel coronary artery bypass graft procedure and placed on prophylactic daily aspirin therapy. Aspirin has been shown to prevent recurrent myocardial...
A.
Adenosine diphosphate
B.
Leukotriene B4
C.
Nitric oxide
D.
Prostaglandin I2
E.
Thromboxane A2
【单选题】This figure illustrates the microscopic appearance of the heart of a 56-year-old man who died after a 24-hour hospitalization for severe"crushing' chest pain complicated by hypotension and pulmonary e...
A.
caseous
B.
coagulative
C.
fibrinoid
D.
agngrenous
E.
liquefactive
【单选题】A 56-year-old man with a history of cigarette smoking presents with diffi culty swallowing and a muffl ed voice. Laryngoscopy reveals a 2-cm laryngeal mass. If this mass is a malignant neoplasm, which...
A.
(A) Adenocarcinoma
B.
(B) Leiomyosarcoma
C.
(C) Small cell carcinoma
D.
(D) Squamous cell carcinoma
E.
(E) Transitional cell carcinoma
【单选题】A 56-year-old man has a large amount of ascites. What kind of abdomen contour is it for him?
A.
Abdomen is frog-like with umbilicus depressed .
B.
Abdomen is frog-like with umbilicus exerted.
C.
Pointed abdomen
D.
Spherical abdomen
E.
Scaphoid abdomen
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