aptitudetests4me.com
Aptitude Tests 4 Me


bulletPassage Reading

bulletVerbal Logic

bulletNon Verbal Logic

bulletNumerical Logic

bulletData Interpretation

bulletReasoning

bulletAnalytical Ability

bulletBasic Numeracy

bulletAbout Us

bulletContact

bulletPrivacy Policy

bulletGoogle Privacy & Terms

bulletSite Map Page

Passage Reading and English Comprehension

Although genetic mutations in bacteria and viruses can lead to epidemics, some epidemics are caused by bacteria and viruses that have undergone no significant genetic change. In analyzing the latter, scientists have discovered the importance of social and ecological factors to epidemics. Poliomyelitis, for example, emerged as an epidemic in the United States in the twentieth century; by then, modern sanitation was able to delay exposure to polio until adolescence or adulthood, at which time polio infection produced paralysis.

Previously, infection had occurred during infancy, when it typically provided lifelong immunity without paralysis. Thus, the hygiene that helped prevent typhoid epidemics indirectly fostered a paralytic polio epidemic. Another example is Lyme disease, which is caused by bacteria that are transmitted by deer ticks. It occurred only sporadically during the late nineteenth century but has recently become prevalent in parts of the United States, largely due to an increase in the deer population that occurred simultaneously with the growth of the suburbs and increased outdoor recreational activities in the deerís habitat. Similarly, an outbreak of dengue hemorrhagic fever became an epidemic in Asia in the 1950ís because of ecological changes that caused Aedes aegypti, the mosquito that transmits the dengue virus, to proliferate. The stage is now set in the United States for a dengue epidemic because of the inadvertent introduction and wide dissemination of another mosquito, Aedes albopictus.

1021. The passage suggests that a lack of modern sanitation would make which of the following most likely to occur?

(a) An outbreak of Lyme disease
(b) An outbreak of dengue hemorrhagic fever
(c) An epidemic of typhoid
(d) An epidemic of paralytic polio among infants

1022. According to the passage, the outbreak of dengue hemorrhagic fever in the 1950ís occurred for which of the following reasons?

(a) The mosquito Aedes aegypti was newly introduced into Asia
(b) The mosquito Aedes aegypti became more numerous
(c) The mosquito Aedes albopictus became infected with the dengue virus
(d) Individuals who would normally acquire immunity to the dengue virus as infants were not infected until later in life

1023. It can be inferred from the passage that Lyme disease has become prevalent in parts of the United States because of which of the following?

(a) The inadvertent introduction of Lyme disease bacteria to the United States
(b) The inability of modern sanitation methods to eradicate Lyme disease bacteria
(c) A genetic mutation in Lyme disease bacteria that makes them more virulent
(d) An increase in the number of humans who encounter deer ticks

1024. Which of the following can most reasonably be concluded about the mosquito Aedes albopictus on the basis of information given in the passage?

(a) It is native to the United States
(b) It can proliferate only in Asia
(c) It transmits the dengue virus
(d) It caused an epidemic of dengue hemorrhagic fever in the 1950ís.

1025. Which of the following best describes the organization of the passage?

(a) A paradox is stated, discussed and left unresolved
(b) Two opposing explanations are presented, argued, and reconciled
(c) A theory is proposed and is then followed by descriptions of three experiments that support the theory
(d) A generalization is stated and is then followed by three instances that support the generalization.

1026. Which of the following, if true, would most strengthen the authorís assertion about the cause of the Lyme disease outbreak in the United States?

(a) The deer population was smaller in the late nineteenth century than in the mid-twentieth century
(b) Interest in outdoor recreation began to grow in the late nineteenth century
(c) In recent years the suburbs have stopped growing
(d) Outdoor recreation enthusiasts routinely take measures to protect themselves against Lyme disease.

TOTAL

Detailed Solution




Download Free EBooks for GMAT, GRE, ACT, SAT, LSAT, MCAT etc.

1. Passage Reading 2. Verbal Logic 3. Non Verbal Logic 4. Numerical Logic

5. Data Interpretation 6. Reasoning 7. Analytical Ability 8. Basic Numeracy

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60
61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120
121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140
141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160
161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180
181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200
201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220
221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240
241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260
261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280
281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300
301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320
321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340
341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360
361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380
381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400
401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419

Tell Your Freind

Your Name:
Your Friends Email Address:
Your Friends Name: